https://www.sciencedemos.net/ 2026-05-13T17:57:02+00:00 https://www.sciencedemos.net/ https://www.sciencedemos.net/_media/wiki:logo.png text/html 2025-08-29T09:22:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:3d_magnetic_field?rev=1756459354&do=diff 3D Magnetic Field Demonstration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Add a few tablespoons of iron filings into a clear, sealable bottle. text/html 2025-09-03T05:24:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:12v_car_battery_dissection?rev=1756877042&do=diff 12V Car Battery Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lead-Acid Car Battery Structure Summary Nothing found Procedure * Observe the structure of a lead-acid car battery, which contains six cells producing about 2.1 volts each, for a total of ~12 volts. text/html 2025-09-08T11:32:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ac_vs_dc_with_a_bicolor_led?rev=1757331177&do=diff AC vs DC with a Bicolor LED Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Visualizing AC and DC with LEDs Summary Nothing found Procedure * Connect a bicolor LED to the base module so it can receive both AC and DC power. text/html 2025-10-06T00:59:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:acceleration_due_to_gravity_with_a_ticker_timer?rev=1759712399&do=diff Acceleration Due to Gravity with a Ticker Timer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring g Using Ticker Tape Summary Nothing found Procedure * Set a ticker timer to 50 Hz (0.02 s per dot). text/html 2025-09-07T11:05:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:acetylene_from_calcium_carbide?rev=1757243124&do=diff Acetylene From Calcium Carbide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Combustion of Acetylene Summary Nothing found Procedure * Place small pieces of calcium carbide in a flask fitted with a delivery tube. text/html 2025-09-25T10:23:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:acid_base_calorimetry?rev=1758795785&do=diff Acid/Base Calorimetry Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat of Neutralisation Calorimetry, Coffee-Cup Calorimeter Summary Nothing found Procedure * Assemble a coffee-cup calorimeter (polystyrene cup with lid), magnetic stirrer, stir bar, and calibrated thermometer or probe. text/html 2025-08-29T10:11:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:acid_in_the_eye?rev=1756462295&do=diff Acid In The Eye Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Place egg white in the Petri dish. * Position the dish on an overhead projector or under a document camera (optional). text/html 2025-09-16T06:29:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:action_of_salivary_amylase_on_starch?rev=1758004153&do=diff Action of Salivary Amylase on Starch Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Saliva Breaking Down Starch Summary Nothing found Procedure * Cook some white rice until soft and allow it to cool slightly. text/html 2025-10-06T03:17:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:aerobic_respiration_in_plants?rev=1759720642&do=diff Aerobic Respiration in Plants Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Production in Germinating Seeds Summary Nothing found Procedure * Gather materials: two vacuum flasks, thermometers, cotton wool, stopwatch, and two sets of peas or beans. text/html 2025-09-11T06:42:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:aerobic_vs_anaerobic_yeast_respiration?rev=1757572972&do=diff Aerobic vs. Anaerobic Yeast Respiration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Inflation Yeast Experiment Summary Nothing found Procedure * Prepare two clean bottles and label them “aerobic” and “anaerobic.” text/html 2025-09-03T06:35:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:afterimage_illusion?rev=1756881321&do=diff Afterimage Illusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Negative vs Positive Afterimages Summary Nothing found Procedure * Prepare a high-contrast, colored image with a small fixation dot at the center, or display a colored shape on a screen. text/html 2025-08-31T08:42:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:agar_cubes_diffusion?rev=1756629741&do=diff Agar Cubes Diffusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Agar Cell Diffusion Summary Nothing found Procedure * Prepare agar solution by mixing agar-agar powder with water, heating in a microwave until it boils, then adding a pH indicator (bromothymol blue or phenolphthalein) and ammonia to achieve a strong color. text/html 2025-08-29T12:54:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:air_cannon_smoke_rings?rev=1756472066&do=diff Air Cannon Smoke Rings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Giant Smoke Cannon Summary Nothing found Procedure * Turn a large trash can upside down and cut an 8-inch (20 cm) circular hole in the center of the bottom. text/html 2025-09-13T15:29:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:air_pressure_breaks_ruler?rev=1757777373&do=diff Air Pressure Breaks a Ruler Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Heavy Newspaper Summary Nothing found Procedure * Place a wooden ruler so that about 5 inches extend beyond the edge of a sturdy table. text/html 2025-09-20T09:36:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:air_track_demonstrations?rev=1758361001&do=diff Air Track Demonstrations Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Low-Friction Air Track Summary Nothing found Procedure * Refer to links below for demonstrations involving the air track. text/html 2025-08-30T10:17:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:alarm_clock_in_vacuum?rev=1756549052&do=diff Alarm Clock in Vacuum - Bell Jar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ringing Bell in a Vacuum, Sound and the Bell Jar Summary Nothing found Procedure * Place a small ringing bell or electronic buzzer inside a transparent bell jar. text/html 2025-09-27T00:28:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:alka_seltzer_balloon_inflation_race?rev=1758932913&do=diff Alka-Seltzer Balloon Inflation Race Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Race: Effect of Temperature on Reaction Rate Summary Nothing found Procedure text/html 2025-10-06T05:47:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:alkaline_battery_dissection?rev=1759729660&do=diff Alkaline Battery Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Wear safety glasses and gloves before handling the battery. text/html 2025-09-05T12:21:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:allotropes_of_sulfur?rev=1757074913&do=diff Allotropes of Sulfur Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Polymeric Sulfur Demonstration, Polymeric Sulfur Summary Nothing found Procedure * Place powdered sulfur in a heat-resistant container and gently heat it. text/html 2025-09-30T09:49:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:aluminum_and_copper_chloride_redox_reaction?rev=1759225791&do=diff Aluminum and Copper(II) Chloride Redox Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Foiled Again Summary Nothing found Procedure * Add 0.5 M copper(II) chloride solution into a beaker. text/html 2025-09-05T13:47:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ammonia_and_hydrogen_chloride_diffusion?rev=1757080029&do=diff Ammonia and Hydrogen Chloride Diffusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Gas Diffusion Rates Summary Nothing found Procedure * Place a long glass tube horizontally on a retort stand and secure it with clamps. text/html 2025-08-30T10:49:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ammonia_fountain?rev=1756550987&do=diff Ammonia Fountain Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: [ * ] Summary Nothing found Procedure * Generate ammonia gas by gently heating a mixture of ammonium chloride and calcium hydroxide in a test tube. text/html 2025-09-05T12:49:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ammonium_dichromate_volcano?rev=1757076555&do=diff Ammonium Dichromate Volcano Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Place a heatproof tray or foil-lined ceramic tile inside a working fume hood and set a small, conical mound of ammonium dichromate at the center. text/html 2025-09-24T06:15:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:amphoteric_aluminium?rev=1758694545&do=diff Amphoteric Aluminium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Start with aluminum hydroxide (Al(OH)₃). * Heat it gently in a furnace (about 250 °C for 30 minutes) or over a Bunsen burner (450 °C for a few minutes) to form Al₂O₃. text/html 2025-10-10T01:42:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:angle_of_repose?rev=1760060526&do=diff Angle of Repose Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Determining the Flow Properties of Powders Summary Nothing found Procedure * Prepare several samples of sand with different particle sizes or mixtures. text/html 2025-10-06T02:25:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:angle_of_sunlight_and_energy_distribution?rev=1759717524&do=diff Angle of Sunlight and Energy Distribution Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Investigating the Effect of Sun Angle on Heating Summary Nothing found Procedure text/html 2025-10-06T04:57:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:annealing_and_quenching_bobby_pins?rev=1759726673&do=diff Annealing and Quenching Bobby Pins Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Treatment of Steel, Effect of Cooling Rate on Steel Properties Summary Nothing found text/html 2025-09-11T09:57:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:archimedes_principle?rev=1757584654&do=diff Archimedes’ Principle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Buoyant Force and Displacement Summary Nothing found Procedure * Fill a large beaker (about 2 liters) with water. text/html 2025-09-14T23:31:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:asch_conformity_experiment?rev=1757892695&do=diff Asch Conformity Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Social Pressure and Group Influence Summary Nothing found Procedure * Recruit a small group of participants, including one real subject and several helpers who are text/html 2025-09-17T00:51:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:asexual_propagation_in_plants?rev=1758070312&do=diff Asexual Propagation in Plants Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plant Propagation by Cuttings Summary Nothing found Procedure * Gather materials: stock plants (such as coleus, pothos, begonias, geraniums, or wandering jew), scissors, clean bottles, water, and moist soilless mix. text/html 2025-10-06T03:26:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:asexual_reproduction_of_onion?rev=1759721184&do=diff Asexual Reproduction of Onion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Growing an Onion in Water Summary Nothing found Procedure * Take a healthy onion bulb. text/html 2025-09-09T02:47:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:atomic_spectra_with_diffraction_grating?rev=1757386073&do=diff Atomic Spectra With a Diffraction Grating Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fingerprint of Atoms: Emission Lines, Emission Spectra Summary Nothing found Procedure text/html 2025-09-18T23:03:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:baking_soda_and_vinegar_volcano?rev=1758236600&do=diff Baking Soda and Vinegar Volcano Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Erupting Volcano Model Summary Nothing found Procedure * Cut and shape a piece of card into a cone that can fit over a plastic bottle, leaving the neck of the bottle exposed. text/html 2025-08-30T09:04:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:baking_soda_vinegar_balloon?rev=1756544678&do=diff Blowing Up a Balloon with Baking Soda and Vinegar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Self-Inflating Balloons, Baking Soda and Vinegar Balloons Summary Nothing found text/html 2025-09-27T00:23:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balance_6_nails_on_1?rev=1758932602&do=diff Balancing 6 Nails on 1 Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Easy Nail Balancing Trick Summary Nothing found Procedure * Gather several nails of equal size (about 10 works well) and a block of wood. text/html 2025-09-11T09:41:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balancing_a_hammer_with_a_ruler?rev=1757583662&do=diff Balancing a Hammer with a Ruler Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Hammer-and-Ruler Trick Summary Nothing found Procedure * Wrap two rubber bands around the handle of a hammer near its head to form a loop. text/html 2025-09-20T09:30:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ball_and_ring_expansion?rev=1758360630&do=diff Ball and Ring Expansion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Thermal Expansion of Metals Summary Nothing found Procedure * Begin with the ball and ring apparatus at room temperature; pass the ball through the ring to show it fits. text/html 2025-09-20T03:38:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ballistic_car?rev=1758339530&do=diff Ballistic Car Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Moving Cart Ball Launcher Summary Nothing found Procedure * Place a ballistic car on a low-friction track or smooth surface. text/html 2025-08-30T14:13:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_bed_of_nails?rev=1756563211&do=diff Balloon Bed of Nails Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon on Nails Demonstration Summary Nothing found Procedure * Prepare the base board by pre-drilling holes for nails and insert them to form a nail bed. text/html 2025-09-05T11:47:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_expanding_universe?rev=1757072866&do=diff Balloon Expanding Universe Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Expanding Balloon Model Summary Nothing found Procedure * Provide each group of students with a balloon, small stickers, and a marker. text/html 2025-09-18T21:34:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_hovercraft?rev=1758231296&do=diff Balloon Hovercraft Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: CD Hovercraft Summary Nothing found Procedure * Provide each student with a CD, a balloon, and a sport drink cap with a pop-out nozzle. text/html 2025-10-10T01:46:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_powered_car?rev=1760060775&do=diff Balloon Powered Car Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Gather recycled materials such as a lightweight bottle, four bottle caps for wheels, two skewers for axles, straws, tape, scissors, and a balloon. text/html 2025-09-05T05:23:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_rocket?rev=1757049813&do=diff Balloon Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton’s Third Law with Balloons Summary Nothing found Procedure * Cut a length of string (about 3 meters) and thread it through a straw. text/html 2025-09-09T04:45:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_syringe_boyles_law?rev=1757393140&do=diff Balloon in Syringe Boyle's Law Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: In and Out: Demonstrating Boyle’s Law Summary Nothing found Procedure * Fill one small balloon with air, keeping it small enough to fit inside a syringe, then tie it off. text/html 2025-08-31T09:44:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:balloon_volume_temperature?rev=1756633454&do=diff Balloon Volume and Temperature Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Effects of Temperature on Balloons, Charles's Law Summary Nothing found Procedure * text/html 2025-09-27T13:54:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:barber_pole_effect?rev=1758981262&do=diff Barber Pole Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Polarization in Sugar Solutions Summary Nothing found Procedure * See methods give in the Links section below. text/html 2025-08-29T12:39:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bell_jar_breathing_model?rev=1756471166&do=diff Bell Jar Breathing Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Place two balloons inside a bell jar and connect them to a Y-tube, which passes through a bung at the top of the jar. text/html 2025-08-30T13:54:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bernoullis_principle_blowing_bag?rev=1756562097&do=diff Bernoulli’s Principle Blowing Up Bag Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Bernoulli Bag, Windbag Wonders Summary Nothing found Procedure * Loosen a long, lightweight plastic bag (e.g., windbag or cut section of a diaper-genie refill) and tie a simple knot in one end. text/html 2025-09-27T02:42:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bernoullis_toilet_paper?rev=1758940971&do=diff Bernoulli’s Toilet Paper Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Leaf Blower Bernoulli Experiment Summary Nothing found Procedure * Hold a toilet paper roll horizontally on a stick. text/html 2025-09-04T02:32:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bicycle_gears?rev=1756953148&do=diff Bicycle Gears Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gears and Mechanical Advantage Summary Nothing found Procedure * Show a bicycle and point out the pedals, chain, and gears. text/html 2025-09-04T02:51:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bicycle_wheel_gyroscope?rev=1756954295&do=diff Bicycle Wheel Gyroscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Angular Momentum with a Bicycle Wheel Summary Nothing found Procedure * Attach handles to each side of a bicycle wheel’s axle. text/html 2025-09-04T02:49:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:big_dry_ice_bubble?rev=1756954153&do=diff Big Dry Ice Bubble Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Bubble Summary Nothing found Procedure * Place a piece of dry ice into a large bowl and pour in some water. text/html 2025-09-20T21:15:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bimetallic_strip_thermostat?rev=1758402913&do=diff Bimetallic Strip Thermostat Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Thermal Expansion with Bimetallic Strips Summary Nothing found Procedure * Secure the bimetallic strip on a stand. text/html 2025-09-22T12:48:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bird_beak_adaptations_game?rev=1758545337&do=diff Bird Beak Adaptations Game Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Darwin’s Finches Simulation Summary Nothing found Procedure * Gather a set of tools (tweezers, spoons, clothespins, chopsticks) to represent bird beaks, plus cups to represent bird stomachs. text/html 2025-09-11T23:26:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bite_mark_analysis?rev=1757633177&do=diff Bite Mark Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bite Impression Forensics Summary Nothing found Procedure * Introduce forensic odontology with a slideshow or discussion about how bite marks are used in investigations. text/html 2025-09-16T11:37:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:biuret_test_for_protein?rev=1758022673&do=diff Biuret Test for Protein Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Testing Foods for Protein Summary Nothing found Procedure * Prepare Biuret solution by mixing equal volumes of 1% copper sulfate (Biuret A) and 1% sodium or potassium hydroxide (Biuret B). text/html 2025-09-21T08:22:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:black_light_fluorescence?rev=1758442963&do=diff Black Light Fluorescence Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: UV-Induced Glow Summary Nothing found Procedure * Darken the room and place sample items (white paper, petroleum jelly, tonic water or club soda, assorted vitamins, white vinegar) on a tabletop. text/html 2025-09-16T07:17:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:black_vs_silver_can_cooling?rev=1758007022&do=diff Black vs Silver Can Cooling Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Two-Can Radiation Summary Nothing found Procedure * Boil water in a kettle. * Fill both the black can and the silver can with boiling water. text/html 2025-09-16T07:12:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:black_vs_white_can_heating?rev=1758006775&do=diff Black vs White Can Heating Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Canned Heat Summary Nothing found Procedure * Paint one empty coffee can flat white (inside and out) and another flat black. text/html 2025-09-15T01:41:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blind_spot?rev=1757900506&do=diff Blind Spot Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Locating the Blind Spot, Finding the Optic Nerve Gap Summary Nothing found Procedure * Give each student a 3 x 5 inch card (or other stiff paper) and a black marker. text/html 2025-09-04T01:56:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:block_and_tackle_broomsticks?rev=1756950963&do=diff Block and Tackle with Broomsticks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Block and Tackle Pulley, Mechanical Advantage Summary Nothing found Procedure text/html 2025-09-10T12:23:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blood_flow_and_artery_constriction?rev=1757507023&do=diff Blood Flow and Artery Constriction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heart Trouble Summary Nothing found Procedure * Put on safety goggles and a lab coat. text/html 2025-09-08T01:21:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blood_model_in_a_bottle?rev=1757294489&do=diff Blood Model in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bottle of Blood Summary Nothing found Procedure * Fill a large plastic bottle with about 1–1.5 liters of water. text/html 2025-09-11T22:42:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blood_spatter_patterns?rev=1757630545&do=diff Blood Spatter Patterns Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effect of Drop Height on Bloodstain Diameter Summary Nothing found Procedure * Gather materials: chart paper, fake blood, disposable pipette, metric ruler, yardstick or meter stick, markers, and optional step stool/ladder with supervision. text/html 2025-09-27T03:05:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blowing_balloon_in_flask?rev=1758942325&do=diff Blowing Balloon in Flask Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vacuum Balloon Demo Summary Nothing found Procedure * Add about 10 mL of water to a 250-mL borosilicate Erlenmeyer flask. text/html 2025-09-15T01:14:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:blue_bottle_experiment?rev=1757898871&do=diff Blue Bottle Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Shake-and-Change Redox Reaction Summary Nothing found Procedure * Add 300 mL of distilled water to a 500 mL Erlenmeyer flask. text/html 2025-09-27T06:54:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:boiling_cold?rev=1758956083&do=diff Boiling Cold Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Butane Boiling, Evaporation Cooling Summary Nothing found Procedure * Open a large zipper-lock plastic bag and place the nozzle of a butane spray can inside. text/html 2025-09-20T20:41:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:boiling_water_at_room_temperature?rev=1758400887&do=diff Boiling Water at Room Temperature Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Boyle-ing Water Summary Nothing found Procedure * Fill a clear plastic syringe about one-quarter full with tap water, minimizing the amount of trapped air. text/html 2025-09-20T20:45:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:boiling_water_in_a_vacuum_chamber?rev=1758401132&do=diff Boiling Water in a Vacuum Chamber Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Room Temperature Boiling Summary Nothing found Procedure * Place a small beaker of room-temperature water inside a vacuum chamber. text/html 2025-09-27T08:43:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:boiling_water_with_ice?rev=1758962596&do=diff Boiling Water with Ice Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lowering Boiling Point with Pressure Summary Nothing found Procedure * Fill a flat-bottomed glass flask with water and bring it to a boil using a hot plate. text/html 2025-09-04T12:06:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:borax_crystal_snowflakes?rev=1756987598&do=diff Borax Crystal Snowflakes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pipe Cleaner Crystal Snowflakes Summary Nothing found Procedure * Shape small six-armed snowflakes from pipe cleaners (about 1.5 stems per snowflake) and tie a loop of nylon thread to hang each one; ensure they fit inside your jars without touching sides or bottom. text/html 2025-09-01T05:57:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bottle_rocket?rev=1756706256&do=diff Bottle Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pop Bottle Rocket, Water Rocket Summary Nothing found Procedure * Construct or purchase a pop bottle rocket launcher and set it up in an open outdoor area. text/html 2025-09-10T07:25:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bread_model_of_ground_pollution?rev=1757489141&do=diff Bread Model of Ground Pollution Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Food Coloring Soil Pollution Model Summary Nothing found Procedure * Place slices of white bread upright in a tray or container to simulate soil layers. text/html 2025-09-20T20:19:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:breaking_glass_with_sound?rev=1758399582&do=diff Breaking Glass with Sound Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Resonance and Glass Shattering Summary Nothing found Procedure * Select a large wine glass with thin walls and a clear, ringing resonance when tapped. text/html 2025-09-23T05:43:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:brine_shrimp_hatching_and_growth?rev=1758606197&do=diff Brine Shrimp Hatching and Growth Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sea Monkey Hatch and Raise Summary Nothing found Procedure * Gather gear: clean jar or bottle hatchery, marine/sea salt, dechlorinated water, brine shrimp eggs, optional air pump with air stone, light source, thermometer, fine net or sieve, labels. text/html 2025-09-24T04:42:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:brownian_motion_in_a_smoke_cell?rev=1758688949&do=diff Brownian Motion in a Smoke Cell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Smoke Particle Motion Under Microscope Summary Nothing found Procedure * Generate smoke using a paper straw or similar safe source. text/html 2025-08-30T11:49:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bubbling_lava_lamp?rev=1756554575&do=diff Bubbling Lava Lamp Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Lava Lamp Summary Nothing found Procedure *Baking Soda Lava Lamp* * Place a few tablespoons of baking soda in the bottom of a tall, clear jar. text/html 2025-09-11T05:59:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bubbling_plants_quantifying_photosynthesis?rev=1757570348&do=diff Bubbling Plants: Quantifying Photosynthesis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Light Intensity and Photosynthesis with Elodea Summary Nothing found Procedure text/html 2025-09-15T02:09:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bubbling_slime?rev=1757902142&do=diff Bubbling Slime Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vinegar and Baking Soda Slime Summary Nothing found Procedure * Pour 2 cups of vinegar into a bowl or container. text/html 2025-09-25T10:16:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:buchner_filtration?rev=1758795360&do=diff Buchner Filtration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rapid Filtration of Crystals Summary Nothing found Procedure * Assemble apparatus: retort stand and clamp, side-arm vacuum flask, rubber adapter, Buchner funnel, vacuum source (e.g. water aspirator), and appropriate filter paper. text/html 2025-09-22T04:02:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:build_a_cell?rev=1758513727&do=diff Build a Cell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plant and Animal Cell Models Summary Nothing found Procedure * Provide students with printed templates of plant and animal cells. text/html 2025-09-08T11:13:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:build_a_model_lung?rev=1757330035&do=diff Build a Model Lung Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bottle Lung Model Summary Nothing found Procedure * Cut the bottom off a 2-liter plastic bottle to form the chest cavity. text/html 2025-09-22T13:20:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:build_a_phylogenetic_tree?rev=1758547219&do=diff Build a Phylogenetic Tree Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Constructing a Cladogram Summary Nothing found Procedure * See links for suggested methods and activities. text/html 2025-09-27T09:20:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bullroarer_from_string_and_ruler?rev=1758964838&do=diff Bullroarer from String and Ruler Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Bullroarer Summary Nothing found Procedure * Tie one end of a length of string (about 1 meter) securely to one end of a flat ruler. text/html 2025-09-13T14:52:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bunsen_burner_operation?rev=1757775122&do=diff Bunsen Burner Operation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Proper Use of a Bunsen Burner Summary Nothing found Procedure * Clear the area of flammable materials. text/html 2025-10-02T03:53:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:bunsen_burner_soot?rev=1759377206&do=diff Bunsen Burner Soot Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Incomplete Combustion with a Bunsen Burner Summary Nothing found Procedure * Place a Bunsen burner on a heat-proof mat and connect it to the gas supply. text/html 2025-09-26T23:48:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:buoyancy_and_floating_cups?rev=1758930487&do=diff Buoyancy and Floating Cups Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Investigating Upthrust with Floating Cups Summary Nothing found Procedure * Fill one large container with tap water and another with concentrated salt solution. text/html 2025-09-05T13:38:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_magnesium_ribbon?rev=1757079500&do=diff Burning Magnesium Ribbon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bright Light Magnesium Reaction Summary Nothing found Procedure * Cut a strip of magnesium ribbon about 10 cm (4 inches) long. text/html 2025-09-11T09:16:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_paper_with_a_convex_lens?rev=1757582193&do=diff Burning Paper with a Convex Lens Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Focusing Sunlight with a Convex Lens Summary Nothing found Procedure * Put on sunglasses for eye protection (Note: do not look at sun directly or through convex lens). text/html 2025-09-02T05:31:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_paper_with_colliding_steel_balls?rev=1756791087&do=diff Burning Paper with Colliding Steel Balls Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Colliding Spheres Summary Nothing found Procedure * Obtain two solid steel balls. text/html 2025-08-30T01:52:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_paper_with_ice?rev=1756518764&do=diff Burning Paper with Ice Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ice-Powered Fire, Sodium Peroxide and Water Reaction Summary Nothing found Procedure * Tear or cut tissue paper into very fine pieces and pile them into a small cone shape about 5 cm high on an asbestos or tile plate. text/html 2025-08-30T23:53:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_steel_wool_increase_mass?rev=1756598033&do=diff Burning Steel Wool Increases Its Mass Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Combustion of Steel Wool, Oxygen and Mass Change in Steel Wool Summary Nothing found text/html 2025-09-25T02:37:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_steel_wool_with_a_9_volt_battery?rev=1758767838&do=diff Burning Steel Wool with a 9 Volt Battery Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Steel Wool Fireworks Experiment Summary Nothing found Procedure * Place a small amount of fine-grade steel wool (00 or 000) in a disposable metal baking pan. text/html 2025-09-07T10:40:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:burning_sulfur_to_simulate_acid_rain?rev=1757241625&do=diff Burning Sulfur to Simulate Acid Rain Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Formation of Acid Rain from Sulfur Summary Nothing found Procedure * Place a small volume of water containing universal indicator in a beaker or flask. text/html 2025-09-05T14:02:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:butane_molecular_mass?rev=1757080952&do=diff Molecular Mass of Butane Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Molar Mass of Butane by Gas Collection Summary Nothing found Procedure * Fill a large container with water and invert a graduated cylinder full of water into it. Clamp the cylinder securely. text/html 2025-08-30T15:04:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:can_ripper?rev=1756566290&do=diff Can Ripper Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Carving a Can with Chemistry, Aluminium vs Copper Chloride Summary Nothing found Procedure - Use a triangular file to carefully score a fine line around the inside of an empty soda can, about halfway down. This exposes the aluminum beneath the protective coating. text/html 2025-08-30T03:37:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:candle_and_rising_water?rev=1756525063&do=diff Candle and Water Rising Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Rising Water Summary Nothing found Procedure * Place a lit candle upright in a shallow dish of water. text/html 2025-08-30T03:52:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:candy_bar_plate_techtonics?rev=1756525967&do=diff Candy Bar Plate Tectonics Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Gather materials: layered candy bar (chocolate over caramel or nougat), paper towel or plate, clean hands or disposable gloves, toothpick for pointing, and a notebook. text/html 2025-10-06T05:21:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:candy_camouflage?rev=1759728065&do=diff Candy Camouflage Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: M&M Predator–Prey Challenge Summary Nothing found Procedure * Wash hands so the candies remain clean and edible afterward. text/html 2025-09-25T02:41:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:candy_chromatography?rev=1758768118&do=diff Candy Chromatography Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Smartie Chromatography Summary Nothing found Procedure * Gather materials: chromatography paper or paper towel, pencil, ruler, scissors, small beakers or cups, pipette or droppers, wooden splints or toothpicks, plate or plastic lid, table salt, water, binder clips, stir stick, assorted colored candies, red/green/blue food coloring. text/html 2025-09-22T04:07:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:candy_classification?rev=1758514023&do=diff Candy Classification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dichotomous Key with Candy Summary Nothing found Procedure * Gather at least 7 different types of candy. text/html 2025-09-04T12:30:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cannon_fire_reaction?rev=1756989045&do=diff Cannon Fire Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cannon Fire Summary Nothing found Procedure * Place a heat mat on the bench and set up a tripod and safety screen facing the audience. text/html 2025-10-06T06:17:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbon_dioxide_equilibrium_in_water?rev=1759731449&do=diff Carbon Dioxide Equilibrium in Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effect of Pressure on Carbon Dioxide Solubility Summary Nothing found Procedure * text/html 2025-09-20T21:08:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbon_dioxide_extinguisher?rev=1758402494&do=diff Carbon Dioxide Fire Extinguisher Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fire Extinguisher, Vinegar and Baking Soda Summary Nothing found Procedure * Place candles in a clear glass beaker or bowl. text/html 2025-09-16T07:08:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbon_dioxide_greenhouse_jar?rev=1758006536&do=diff Carbon Dioxide Greenhouse Jar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Greenhouse Effect Summary Nothing found Procedure * Label five jars: Air (control), Vinegar (control), Baking Soda (control), Reaction (sealed), and Reaction (unsealed). text/html 2025-09-14T22:18:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbon_dioxide_in_breath?rev=1757888339&do=diff Carbon Dioxide in Breath Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Carbon Dioxide in Inhaled and Exhaled Air Summary Nothing found Procedure * Set up two boiling tubes, each containing an equal amount of limewater. text/html 2026-02-10T03:42:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbon_sugar_snake?rev=1770694930&do=diff Carbon Sugar Snake Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sugar and Baking Soda Snake Summary Nothing found Procedure * Mix 4 teaspoons of powdered sugar with 1 teaspoon of baking soda in a small bowl. text/html 2025-09-09T22:58:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:carbonated_drink_shake_up?rev=1757458726&do=diff Carbonated Drink Shake Up Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soda Can Shake-Up Summary Nothing found Procedure * Take a sealed can of soda and shake it vigorously. text/html 2025-08-29T08:42:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cartesian_diver?rev=1756456956&do=diff Cartesian Diver Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a clear plastic bottle about three-quarters full with water. text/html 2025-09-08T12:24:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:catch_a_falling_dollar?rev=1757334270&do=diff Catch a Falling Dollar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dollar Bill Reaction Time Trick Summary Nothing found Procedure * Hold a dollar bill by its top edge so that it hangs vertically. text/html 2025-08-30T04:00:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:celery_capillary_action?rev=1756526445&do=diff Celery Capillary Action Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Color Changing Celery Summary Nothing found Procedure * Gather a celery stalk with leaves, 2 tall clear glasses, water, red and blue food colouring, and a sharp kitchen knife. text/html 2025-09-14T23:57:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:center_of_gravity_balance_test?rev=1757894268&do=diff Center of Gravity Balance Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Finding Your Center of Gravity Summary Nothing found Procedure * Choose a wide, flat curb with clear space on both sides and recruit an assistant with a stopwatch. text/html 2025-08-30T08:39:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:center_of_gravity?rev=1756543182&do=diff Center of Gravity Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Center of Mass Summary Nothing found Procedure * Cut out an irregular shape from plywood or stiff cardboard. text/html 2025-09-10T07:19:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:centripetal_force_marble?rev=1757488740&do=diff Centripetal Force Marble Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marble Gravitron Summary Nothing found Procedure * Hold a wine glass (or any oval-shaped glass) upright by its base. text/html 2025-09-15T06:24:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:centripetal_force_with_bucket?rev=1757917475&do=diff Centripetal Force with Bucket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water Pail in Circular Motion Summary Nothing found Procedure * Fill a sturdy bucket about halfway with water. text/html 2025-09-28T13:55:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cerebrospinal_fluid_egg_experiment?rev=1759067711&do=diff Cerebrospinal Fluid Egg Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Shake Up Your Brain Summary Nothing found Procedure * Draw a face on a raw egg (“Mr. Egghead”). The egg represents the brain. text/html 2025-09-14T23:20:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:change_blindness?rev=1757892055&do=diff Change Blindness Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Spot the Difference Illusion Summary Nothing found Procedure * Display an image to participants. text/html 2025-09-17T23:11:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:changing_albedo?rev=1758150689&do=diff Changing Albedo Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effect of Albedo on Surface Temperature Summary Nothing found Procedure * Place soil, sugar (to represent snow), and colored water (to represent oceans) in separate containers, about 4 cm deep. text/html 2025-09-24T06:42:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chemical_chameleon?rev=1758696137&do=diff Chemical Chameleon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rainbow Redox Reaction Summary Nothing found Procedure * Prepare Solution A: dissolve a small amount of potassium permanganate (about 2 mg) in 500 mL of distilled water to make a deep purple solution. text/html 2025-09-27T13:31:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chemical_reactions_in_red_white_and_blue?rev=1758979893&do=diff Chemical Reactions in Red, White and Blue Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Patriotic Chemical Reactions Summary Nothing found Procedure * Place three 100 ml beakers in a row. text/html 2025-09-01T06:13:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chemical_sunset?rev=1756707235&do=diff Chemical Sunset Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Colloidal Sulfur Sunset, Tyndall Effect Summary Nothing found Procedure * Prepare a cardboard or heavy paper cutout to cover the projector surface, with a circular hole the size of a crystallization dish. Optionally attach an acetate sheet with a scene drawn in permanent marker. text/html 2025-09-15T01:18:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chemical_traffic_light?rev=1757899088&do=diff Chemical Traffic Light Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Indigo Carmine Redox Indicator Summary Nothing found Procedure * Dissolve about 6 g of glucose in 200 mL of warm distilled water. text/html 2025-09-17T03:12:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chemical_weathering?rev=1758078751&do=diff Chemical Weathering Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Acid Rain and Rock Breakdown Summary Nothing found Procedure * Place a piece of chalk or limestone at the bottom of a clear plastic jar. text/html 2025-09-22T10:42:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chicken_wing_dissection?rev=1758537729&do=diff Chicken Wing Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Chicken Wing Functional Dissection - Stephen Rizner: text/html 2025-09-15T10:18:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chladni_plates?rev=1757931511&do=diff Chladni Plates Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vibrating Plate Patterns, Resonance Nodes on Plates Summary Nothing found Procedure * Mount a flat metal plate (circular, square, or other shape) on a central stalk fixed to a sturdy base. text/html 2025-09-24T06:20:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:chromate_dichromate_equilibrium?rev=1758694840&do=diff Chromate – Dichromate Equilibrium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Chromate to Dichromate Color Change Summary Nothing found Procedure * Dissolve potassium chromate (K₂CrO₄) in water to make a yellow solution. text/html 2025-10-06T00:31:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:class_member_classification?rev=1759710663&do=diff Class Member Classification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Creating a Dichotomous Key for People Summary Nothing found Procedure * Gather the entire class as participants. text/html 2025-09-17T01:01:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:classification_card_sorting?rev=1758070903&do=diff Classification Card Sorting Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Kingdoms and Domains Intro Activity Summary Nothing found Procedure * Provide each group of students with a set of 20 organism cards (pictures with species names). text/html 2025-09-07T23:31:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:classification_with_finger_puppets?rev=1757287889&do=diff Classification With Finger Puppets Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dichotomous Keys with Finger Puppets Summary Nothing found Procedure * Give each student one different animal finger puppet and a minute to explore it. text/html 2025-08-31T13:36:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cleaning_floor_with_liquid_nitrogen?rev=1756647417&do=diff Cleaning the Floor with Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Leidenfrost Effect, Cryogenic Dust Cleaner Summary Nothing found Procedure * text/html 2025-10-13T00:28:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cloud_chamber?rev=1760315315&do=diff Cloud Chamber Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Alcohol Cloud Chamber Tracks Summary Nothing found Procedure * Refer to links below for instructions and experiments. text/html 2025-09-04T02:50:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cloud_in_a_bottle?rev=1756954202&do=diff Cloud in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mini Water Cycle Cloud Summary Nothing found Procedure * Prepare a cork or stopper with a hole through it and insert a ball inflating needle. Add a toothpick sideways to stop the cork from being pushed inside the bottle. text/html 2025-09-07T22:01:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cobalt_chloride_equilibrium?rev=1757282479&do=diff Cobalt Chloride Equilibrium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cobalt Blue and Pink Equilibrium Summary Nothing found Procedure * Dissolve 5 g of anhydrous cobalt(II) chloride in 250 ml of ethanol in a 500 ml glass flask or bottle. text/html 2025-09-22T12:10:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:coin_toss_genetics?rev=1758543013&do=diff Coin Toss Genetics Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Genetic Probability with Coins Summary Nothing found Procedure * Begin with probability exercises: predict the chance of heads or tails in single and double coin tosses, then test and record results. text/html 2025-09-07T23:49:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:collect_and_observe_fingerprints?rev=1757288974&do=diff Collect and Observe Fingerprints Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Unique as Your Fingerprint Summary Nothing found Procedure * Draw a 2.5 cm (1 inch) square on a sheet of paper and shade it in heavily with a pencil until it is very dark. text/html 2025-09-27T11:18:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_changing_flowers?rev=1758971909&do=diff Color Changing Flowers Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bicoloured Flowers Summary Nothing found Procedure * Fill separate glasses with water and add different food coloring to each. text/html 2025-08-31T00:10:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_changing_walking_water?rev=1756599028&do=diff Color Changing Walking Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rainbow Walking Water Summary Nothing found Procedure * Place 7 cups in a row. Fill the 1st, 3rd, 5th, and 7th cups about three-quarters full with water. Leave the other cups empty. text/html 2025-08-31T00:01:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_changing_water?rev=1756598473&do=diff Color Changing Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Blue and Yellow Water Illusion Summary Nothing found Procedure * Fill an empty glass about three-quarters full with water. text/html 2025-09-08T00:27:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_mixing_and_shadows?rev=1757291243&do=diff Color Mixing and Shadows Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mixing Red, Green, and Blue Light Summary Nothing found Procedure * Set up a white wall or screen in a darkened room. text/html 2025-08-30T02:25:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_swirling_milk?rev=1756520702&do=diff Color Swirling Milk Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magic Milk, Soap and Milk Surface Tension Summary Nothing found Procedure * Pour about 1–2 cm of milk into a shallow dish. text/html 2025-09-02T05:46:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:color_temperature_stars?rev=1756791995&do=diff Colour and Temperature of Stars Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Connect a lamp in series with a variable resistor and a power supply. text/html 2025-09-11T09:23:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:colour_subtraction_with_filters?rev=1757582632&do=diff Colour Subtraction with Filters Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Light Absorption and Transmission Summary Nothing found Procedure * Shine white light through a colored filter (such as red, green, or blue cellophane). Observe which colors pass through and which are blocked. text/html 2025-10-06T05:48:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:comparing_evaporation_rates?rev=1759729695&do=diff Comparing Evaporation Rates Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Evaporation and Intermolecular Forces Summary Nothing found Procedure * Set up a temperature sensor connected to a data collection device. text/html 2025-09-17T04:49:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:compost_in_a_bottle?rev=1758084565&do=diff Compost in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Remove the label from a clear 2-liter soda bottle so the contents can be observed. text/html 2025-10-05T22:38:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:compressing_solids_liquids_gases?rev=1759703913&do=diff Compressing Solids, Liquids and Gases Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Compressibility of Matter Summary Nothing found Procedure * Obtain three large syringes (50-100mL recommended). Leave one empty (air), fill one with water, and use one prefilled with small plastic pellets to represent a solid. text/html 2025-09-02T01:56:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:conduction_of_different_materials?rev=1756778164&do=diff Heat Conduction of Different Materials Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Transfer in Metals, Heat Conduction Melting Wax Summary Nothing found Procedure text/html 2025-09-08T01:38:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:conservation_of_mass_baking_soda_and_vinegar?rev=1757295496&do=diff Conservation of Mass with Baking Soda and Vinegar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Law of Conservation of Mass Demonstration Summary Nothing found Procedure text/html 2025-09-08T01:42:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:convection_among_friends?rev=1757295761&do=diff Convection Among Friends Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Transfer with Hands, Convection and Conduction Demonstration Summary Nothing found Procedure text/html 2025-09-08T01:32:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:convex_lens_mirror_imaging?rev=1757295178&do=diff Convex Lens Mirror Imaging Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Convex Lens and Concave Mirror Imaging, Refractors and Reflectors Demonstration Summary Nothing found text/html 2025-09-01T06:30:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cookie_mining?rev=1756708244&do=diff Cookie Mining Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Chocolate Chip Mining Summary Nothing found Procedure * Distribute one cookie, a plate, and a Cookie Mining Worksheet to each student. text/html 2025-09-14T22:14:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cooking_an_egg_without_heat?rev=1757888051&do=diff Cooking an Egg Without Heat Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Protein Denaturation with Alcohol Summary Nothing found Procedure * Crack an egg into a small glass bowl (scramble if desired). text/html 2025-10-06T04:16:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cooling_rate_and_crystal_size?rev=1759724218&do=diff Cooling Rate and Crystal Size Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effect of Cooling Rate on the Size of Copper Sulfate Crystals Summary Nothing found Procedure text/html 2025-09-07T10:02:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_chloride_equilibrium?rev=1757239375&do=diff Copper Chloride Equilibrium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Copper(II) Complex Ion Equilibrium Summary Nothing found Procedure * Prepare a test tube half filled with 1.5 M copper(II) chloride solution. text/html 2025-09-25T03:18:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_complex_equilibrium?rev=1758770294&do=diff Copper Complex Equilibrium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Le Châtelier’s Principle Summary Nothing found Procedure * Prepare a blue solution of copper(II) chloride in water. text/html 2025-09-13T14:23:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_electroplating?rev=1757773429&do=diff Copper Electroplating Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Copper Coating Using Electricity Summary Nothing found Procedure * Prepare a copper sulfate solution by dissolving copper sulfate crystals in water. text/html 2025-09-09T09:38:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_extraction_using_carbon?rev=1757410737&do=diff Copper Extraction Using Carbon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Reduction of Copper Oxide by Carbon Summary Nothing found Procedure * Mix a small quantity of powdered copper(II) oxide with powdered carbon. text/html 2025-09-29T22:37:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_oxide_and_zinc_displacement_reaction?rev=1759185475&do=diff Copper Oxide and Zinc Displacement Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Zinc Reduces Copper Oxide Summary Nothing found Procedure * Mix small amounts of powdered copper(II) oxide (black) and zinc powder in a heat-resistant container such as a crucible. text/html 2025-09-24T06:01:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_plating_iron?rev=1758693691&do=diff Copper Plating Iron Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Single Displacement Redox Reaction Summary Nothing found Procedure * Fill a small beaker with copper sulfate solution. text/html 2025-09-04T12:35:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:copper_sulfate_blue_crystals?rev=1756989345&do=diff Copper Sulfate Crystals Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Growing Copper Sulfate Crystals Summary Nothing found Procedure * Gather supplies: copper sulfate (CuSO4·5H2O) powder, very hot water, two clean glass jars with lids, a shallow dish, filter paper or coffee filter, nylon fishing line, a pencil or stick, spoon, and paper towels. text/html 2025-09-08T10:41:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:coriolis_effect_balloon?rev=1757328077&do=diff Coriolis Effect Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Earth’s Rotation and Deflection Demonstration Summary Nothing found Procedure * Inflate a balloon and mark the equator around its middle. Label the top as the North Pole and the knot as the South Pole. text/html 2025-09-08T10:45:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cornstarch_and_water?rev=1757328359&do=diff Cornstarch and Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Oobleck, Non-Newtonian Fluid Demonstration Summary Nothing found Procedure * Pour cornstarch into a large bowl. First explore its dry texture by feeling it with your hands. text/html 2025-09-05T05:04:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cornstarch_dancing_on_speaker?rev=1757048681&do=diff Cornstarch Dancing on a Speaker Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dancing Oobleck Summary Nothing found Procedure * Mix cornstarch and water in a bowl, adding small amounts until the mixture has the consistency of honey. text/html 2025-09-22T10:42:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cow_eye_dissection?rev=1758537741&do=diff Cow Eye Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bovine Eye Dissection Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-14T22:14:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cracking_an_egg_underwater?rev=1757888062&do=diff Cracking an Egg Underwater Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Underwater Egg Pressure Experiment Summary Nothing found Procedure * Take a raw egg while scuba diving or during a controlled underwater demonstration. text/html 2025-09-17T03:13:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cracking_apart?rev=1758078829&do=diff Cracking Apart Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Thermal Weathering of Rocks, Physical Weathering Summary Nothing found Procedure * Place a small granite chip in tongs and hold it in the outer blue flame of the Bunsen burner until it glows. text/html 2025-09-05T13:19:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cracking_hydrocarbons?rev=1757078362&do=diff Cracking Hydrocarbons Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cracking paraffin Summary Nothing found Procedure * Set up a test tube containing a small amount of liquid paraffin connected to a delivery tube leading into an inverted test tube over water. text/html 2025-10-06T00:51:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:crash_test_dummy?rev=1759711886&do=diff Crash Test Dummy Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Investigating Inertia Summary Nothing found Procedure * Gather materials: one toy car, Play-Doh (to make a small figure), stack of books or a box, tape, a pencil (to act as a wall), a ruler, and a ramp or piece of cardboard. text/html 2025-09-22T10:43:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:crayfish_dissection?rev=1758537786&do=diff Crayfish Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Arthropod Anatomy: The Crayfish Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-16T06:40:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:crayons_rock_cycle?rev=1758004801&do=diff Crayons Rock Cycle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Model the Rock Cycle with Crayons Summary Nothing found Procedure * Peel the paper from crayons and create shavings using a potato peeler, knife, or cheese grater. text/html 2025-10-06T02:21:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:create_a_sundial?rev=1759717281&do=diff Create a Sundial Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring Time with the Sun Summary Nothing found Procedure * See links below for methods on making and using a sundial. text/html 2025-09-09T05:00:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:creating_an_electromagnet?rev=1757394024&do=diff Creating an Electromagnet Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Gather materials for each pair: an iron or steel nail (about 3 inches), ~2 feet of insulated copper wire (AWG 22 or thinner), a D-cell battery, and several paperclips. text/html 2025-09-28T15:22:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:crumple_zones_egg_car?rev=1759072940&do=diff Crumple Zones Egg Car Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Egg Car Safety Model Summary Nothing found Procedure * Build a simple model car from a box, toy car frame, or cardboard with space to hold an egg as the text/html 2025-09-12T03:44:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:culturing_bacteria?rev=1757648666&do=diff Culturing Bacteria Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Growing Bacteria in Petri Dishes Summary Nothing found Procedure * Prepare nutrient agar by mixing agar powder with hot water and boiling until fully dissolved. text/html 2025-10-05T22:59:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:custard_powder_explosion?rev=1759705183&do=diff Custard Powder Explosion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dust Explosion Demonstration Summary Nothing found Procedure * Make a small hole near the base of an empty coffee tin, approximately the same diameter as a short length of rubber or plastic tubing. text/html 2025-09-08T10:59:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cutting_rope_with_rope?rev=1757329176&do=diff Cutting Rope with Rope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Friction Saw Summary Nothing found Procedure * Tie or secure one rope so that it is held tightly in place (for example, tie between two fixed points). text/html 2025-09-28T14:16:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:cylinder_puzzle_model_of_scientific_inquiry?rev=1759069018&do=diff Cylinder Puzzle Model of Scientific Inquiry Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Mystery Cylinder Summary Nothing found Procedure See links below for instructions for construction. text/html 2025-09-18T06:51:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dart_drop_accuracy_precision_and_uncertainty?rev=1758178270&do=diff Dart Drop Accuracy, Precision, and Uncertainty Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Tape a printed target to a flat board (wood or particle board) and place it on the floor. text/html 2025-09-09T02:54:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:demo_template?rev=1757386494&do=diff TITLE Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: ALT_TITLE Summary Nothing found Procedure Links VIDEO_TITLE - AUTHOR: EMBED VIDEO_TITLE2 - AUTHOR2: EMBED text/html 2025-10-06T05:48:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:density_tower?rev=1759729710&do=diff Density Tower Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rainbow Density Column, Liquid Layering Experiment Summary Nothing found Procedure - Gather a clear jar and the following liquids: honey, corn syrup, maple syrup, milk, liquid soap, water, vegetable oil, and rubbing alcohol. text/html 2025-09-16T11:25:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:detecting_fake_blood_with_luminol?rev=1758021903&do=diff Detecting Fake Blood with Luminol Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Luminol Detection of Blood-Meal Stains Summary Nothing found Procedure * Mix blood meal with a little water and apply as fake blood stains on a surface; let dry slightly. text/html 2025-09-21T01:07:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:diamagnetism_of_water?rev=1758416855&do=diff Diamagnetism of Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water and Magnetic Repulsion Summary Nothing found Procedure * Fill a glass with water and place it on a stable surface. text/html 2025-09-05T12:59:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dichromate_breathalyzer?rev=1757077171&do=diff Dichromate Breathalyzer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Breathalyzer Test Summary Nothing found Procedure * Place two clean, clear cylinders on a tray in a fume hood and label them “water” and “ethanol.” text/html 2025-08-29T22:58:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:diffusion_in_hot_and_cold_water?rev=1756508281&do=diff Diffusion in Hot and Cold Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hot and Cold: Molecules in Motion Summary Nothing found Procedure * Fill one glass halfway with very cold tap water. text/html 2025-09-05T05:46:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:disappearing_coin?rev=1757051196&do=diff Disappearing Coin Trick (Refraction) Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Coin and Water Refraction Trick Summary Nothing found Procedure * Place a coin on a flat surface. text/html 2025-08-30T09:49:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:disappearing_glassware?rev=1756547375&do=diff Disappearing Glassware Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Invisible Glassware, Disappearing Test Tube Summary Nothing found Procedure * Fill a large clear glass bowl with vegetable oil and place a Pyrex beaker inside so it will be hidden for a “reveal” at the end. text/html 2025-09-08T11:41:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:disappearing_ink?rev=1757331667&do=diff Disappearing Ink Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vanishing Ink Chemistry, Color-Changing Ink Prank Summary Nothing found Procedure * Dissolve 1 gram of thymolphthalein powder in 100 mL of ethyl alcohol, stirring to help it dissolve. text/html 2025-09-01T06:19:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:disappearing_x?rev=1756707580&do=diff Disappearing X Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rate of Reaction of Sodium Thiosulfate and Hydrochloric Acid Summary Nothing found Procedure * text/html 2025-09-20T03:06:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:disc_vs_ring_moment_of_inertia?rev=1758337567&do=diff Disc vs Ring Moment of Inertia Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rolling Disc vs Ring Summary Nothing found Procedure * Place a clean inclined plane at an angle greater than 10 degrees. text/html 2025-08-29T09:58:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dissolving_styrofoam_in_acetone?rev=1756461519&do=diff ‘Dissolving’ Styrofoam in Acetone Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dissolving Polystyrene in Acetone Summary Nothing found Procedure * Place a small volume of acetone in a glass beaker or other suitable container. text/html 2025-08-31T22:47:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:distribution_of_earths_water?rev=1756680474&do=diff Distribution of Earth’s Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Earth’s Fresh and Salt Water Summary Nothing found Procedure * Fill a measuring cup with 500 mL of water to represent all of Earth’s water. text/html 2025-10-02T05:11:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:diy_centrifuge?rev=1759381862&do=diff DIY Centrifuge Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Centrifuge Options Summary Nothing found Procedure See links below for several DIY centrifuges: text/html 2025-09-22T01:35:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:diy_robot_hand?rev=1758504908&do=diff DIY Robot Hand Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tendon String Hand Summary Nothing found Procedure * Trace your hand on cardboard and cut out the shape. text/html 2025-09-11T22:36:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dna_extraction_from_kiwi_fruit?rev=1757630189&do=diff DNA Extraction From Kiwi Fruit Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Kiwi Fruit DNA Extraction Summary Nothing found Procedure * Peel the skin from half a kiwi fruit and mash the fruit into a pulp. text/html 2025-09-09T00:01:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dna_paper_model?rev=1757376111&do=diff DNA Paper Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Paper DNA Activity Summary Nothing found Procedure * Cut out the provided paper templates of sugars, phosphates, and bases. text/html 2025-09-08T12:28:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dollar_bill_inertia_challenge?rev=1757334497&do=diff Dollar Bill Inertia Challenge Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton’s Bottle Trick Summary Nothing found Procedure * Place a dollar bill across the mouth of an empty soda bottle. text/html 2025-09-08T12:35:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dominance_and_recessiveness_food_coloring?rev=1757334947&do=diff Dominance and Recessiveness with Food Coloring Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Genetics with Food Coloring Summary Nothing found Procedure * Fill two small glasses with red-colored water and two more with plain water. text/html 2025-09-04T02:41:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:door_knobs_and_handles?rev=1756953700&do=diff Door Knobs and Handles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Door Handle as a Lever Summary Nothing found Procedure * Identify the fulcrum: Show students that the spindle inside the door knob/handle acts as the pivot point. text/html 2025-09-10T02:45:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:doppler_ball?rev=1757472354&do=diff Doppler Ball Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sound Shifts with Motion Summary Nothing found Procedure * Turn on the Doppler ball so it emits a continuous tone. text/html 2026-01-22T04:37:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:doppler_effect_tuning_fork?rev=1769056652&do=diff Doppler Effect with a Tuning Fork Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rotating Tuning Fork Doppler Effect Summary Nothing found Procedure * Tie a strong string securely to the handle of the tuning fork. text/html 2025-09-10T02:50:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:doppler_effect_with_water_waves?rev=1757472634&do=diff Doppler Effect with Water Waves Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water Tank Doppler Demonstration Summary Nothing found Procedure * Fill a shallow tray or ripple tank with water. text/html 2025-09-09T02:48:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:double_slit_experiment_with_light?rev=1757386097&do=diff Double Slit Experiment with Light Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Light Interference Experiment Summary Nothing found Procedure * Set up a coherent light source, such as a laser, pointing at a barrier with two narrow, closely spaced slits. text/html 2025-09-09T02:48:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:double_slit_experiment_with_water_waves?rev=1757386106&do=diff Double Slit Experiment with Water Waves Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Wave Interference with Two Slits Summary Nothing found Procedure * Fill a shallow tank or tray with water and let it settle. text/html 2025-10-14T04:29:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:drinking_bird?rev=1760416199&do=diff Drinking Bird Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dippy Bird Toy Summary Nothing found Procedure * Place a drinking bird toy on a flat surface beside a glass of water. text/html 2025-09-10T00:07:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dropping_balls_from_same_height?rev=1757462841&do=diff Dropping Balls From Same Height Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simultaneous Fall of Objects Summary Nothing found Procedure * Hold a medicine ball and a softball at the same height above the floor. text/html 2025-09-10T00:18:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dropping_coin_and_feather_in_vacuum?rev=1757463534&do=diff Dropping Coin and Feather in a Vacuum Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Galileo’s Falling Objects Demo Summary Nothing found Procedure * Begin with a transparent rigid plastic tube filled with air. Hold it vertically and let the coin and feather fall. Point out that the feather drifts down much more slowly. text/html 2025-09-14T23:36:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dropping_ruler_reaction_time?rev=1757892999&do=diff Dropping Ruler Reaction Time Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring Reaction Time, Catch the Falling Ruler Summary Nothing found Procedure * Prepare reaction timers by attaching a printed template to stiff card or taping it to a ruler. text/html 2025-08-27T09:28:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_balloon?rev=1756286921&do=diff Dry Ice Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inflate a Balloon with Dry Ice, Inflate a Glove with Dry Ice. Summary Nothing found Procedure * text/html 2025-08-27T06:01:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_bubble_tower?rev=1756274487&do=diff Dry Ice Bubble Tower Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Put on cotton or insulated gloves before handling dry ice. text/html 2025-08-27T03:33:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_bubbles?rev=1756265630&do=diff Dry Ice Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Boo Bubbles Summary Nothing found Procedure * Fill a plastic container halfway with warm water. text/html 2025-09-14T22:14:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_carbonated_ice_cream?rev=1757888072&do=diff Dry Ice Carbonated Ice Cream Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bubbly Ice Cream Summary Nothing found Procedure * Place dry ice in a paper bag and crush it into small pieces or powder using a mallet, hammer, or rolling pin. text/html 2025-08-27T04:18:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_comet?rev=1756268308&do=diff Dry Ice Comet Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Create a Comet with Dry Ice Summary Nothing found Procedure * Put on gloves and goggles for safety. text/html 2025-08-27T05:39:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_detergent_bubbles?rev=1756273163&do=diff Dry Ice Detergent Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Bubbles Summary Nothing found Procedure * Put on thick gloves or use tongs to handle dry ice safely. text/html 2025-09-09T04:26:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_film_canister_rocket?rev=1757391999&do=diff Dry Ice Film Canister Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Rocket Rainbow Summary Nothing found Procedure * Put on safety glasses and thick gloves for handling dry ice. text/html 2025-08-27T06:14:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_flame_extinguisher?rev=1756275286&do=diff Dry Ice Flame Extinguisher Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Fire Extinguisher Summary Nothing found Procedure * Place a candle in a cup and light it. text/html 2025-09-04T02:49:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_fog?rev=1756954162&do=diff Dry Ice Fog Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Fog Effects Summary Nothing found Procedure * Ensure the room is well ventilated * Pour some warm water into a bucket or plastic container. text/html 2025-08-27T03:47:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_frozen_bubbles?rev=1756266437&do=diff Dry Ice Frozen Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Make Frozen Bubbles Summary Nothing found Procedure * Put on gloves to handle dry ice safely. text/html 2025-08-27T05:00:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_jack_o_lantern?rev=1756270832&do=diff Dry Ice Jack-O-Lantern Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Jack-O'Lantern Summary Nothing found Procedure * Cut open the top of a pumpkin and scoop out the seeds and pulp. text/html 2025-10-06T05:46:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_ph_colour_change?rev=1759729592&do=diff Dry Ice pH Colour Change Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice and Universal Indicator Summary Nothing found Procedure * Fill a beaker or container with water and add several drops of universal indicator. text/html 2025-08-31T08:55:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_rainbow_colors?rev=1756630536&do=diff Dry ice Rainbow Colors Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dry Ice Color Show Summary Nothing found Procedure * Set out five 1-L beakers filled about three-quarters full with water. text/html 2025-08-27T02:28:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:dry_ice_singing_spoon?rev=1756261738&do=diff Dry Ice Singing Spoon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Singing Spoon Summary Nothing found Procedure * Place a block or chunk of dry ice on a safe, insulated surface. text/html 2025-10-06T05:48:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:earthquake_shake_table?rev=1759729726&do=diff Earthquake Shake Table Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marshmallow Earthquake Engineering Summary Nothing found Procedure * Prepare the “shake table” by setting Jell-O in shallow baking pans the day before; keep covered so it stays springy. text/html 2025-11-06T00:06:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:earths_tilt_and_seasons?rev=1762387571&do=diff Earth's Tilt and the Seasons Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Orbit and Day Length Simulator Summary Nothing found Procedure * Darken the classroom and place a lamp without a shade at the center to represent the Sun. text/html 2025-09-22T10:43:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:earthworm_dissection?rev=1758537799&do=diff Earthworm Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Segmented Worm Anatomy Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-10T07:08:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:easy_heart_pump_model?rev=1757488084&do=diff Easy Heart Pump Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: DIY Human Heart Model Summary Nothing found Procedure * Fill a small jar halfway with water and add a few drops of red food coloring to represent blood. text/html 2025-09-20T03:20:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ebbinghaus_illusion?rev=1758338409&do=diff Ebbinghaus Illusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Relative Size Illusion Summary Nothing found Procedure * Draw or project two identical central circles. text/html 2025-09-17T01:12:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ecosystem_in_a_bottle?rev=1758071556&do=diff Ecosystem in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Closed Bottle Terrarium Summary Nothing found Procedure * Remove the label from a clean soda bottle. text/html 2025-09-20T22:06:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:eddy_currents_and_magnetic_damping?rev=1758405979&do=diff Eddy Currents and Magnetic Damping Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnetic Braking with Eddy Currents Summary Nothing found Procedure * Suspend a flat metal plate as a pendulum and position it so that it swings between the poles of a strong magnet. Observe that its motion is quickly damped. text/html 2025-09-27T13:10:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:edible_candle?rev=1758978629&do=diff Edible Candle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Potato Candle, Observation vs Inference Candle Summary Nothing found Procedure - Peel and cut a potato into a cylinder (like a candle). - Score a small groove in the top to hold the “wick.” - Insert a sliver of almond into the groove. - Light the almond with a lighter or match. - Present the burning “candle” to students and have them share thei… text/html 2025-09-25T09:51:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:effect_of_concentration_acid_and_marble_chips?rev=1758793899&do=diff Effect of Concentration Acid and Marble Chips Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Concentration of HCl and Reaction Rate with Marble Chips Summary Nothing found text/html 2025-09-25T09:59:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:effect_of_particle_size_acid_and_marble_chips?rev=1758794397&do=diff Effect of Particle Size Acid and Marble Chips Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marble Chips and HCl Surface Area Effect Summary Nothing found Procedure text/html 2025-10-05T23:30:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:effect_of_particle_size_on_solubility?rev=1759707015&do=diff Effect of Particle Size on Solubility Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Solubility and Surface Area Summary Nothing found Procedure * Prepare two equal amounts of table salt (about one teaspoon each). text/html 2025-10-14T03:58:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:effect_of_ph_on_catalase_enzyme_activity?rev=1760414320&do=diff Effect of pH on Catalase Enzyme Activity Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Catalase pH Summary Nothing found Procedure * Label five test tubes with the pH values 1, 4, 7, 8, and 12. text/html 2025-09-25T10:05:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:effect_of_temperature_acid_and_marble_chips?rev=1758794758&do=diff Effect of Temperature Acid and Marble Chips Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effect of Temperature on Marble Chips and HCl Summary Nothing found Procedure text/html 2025-10-06T03:38:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:efficiency_of_bouncing_balls?rev=1759721921&do=diff Efficiency of Bouncing Balls Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Energy Efficiency of Balls Summary Nothing found Procedure * Gather a selection of balls such as tennis, squash, table tennis, and cricket balls. text/html 2025-08-30T00:18:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:egg_drop_inertia?rev=1756513081&do=diff Egg Drop Inertia Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton's 1st Law Egg Drop, Egg-drop trick Summary Nothing found Procedure * Fill a large drinking glass about three-quarters full with water and place it on a sturdy table. text/html 2025-08-31T22:31:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:egg_in_bottle?rev=1756679515&do=diff Egg in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Air Pressure Egg Trick, The Egg Squeeze Experiment Summary Nothing found Procedure * Hard boil a medium-sized egg and peel it. text/html 2025-09-27T11:08:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:egg_spinning_inertia?rev=1758971325&do=diff Egg Spinning Inertia Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Raw vs. Hard-Boiled Egg Spin Summary Nothing found Procedure * Prepare one hard-boiled egg (cooled to room temperature) and one raw egg. text/html 2025-08-30T08:20:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:egg_yolk_cell_membrane?rev=1756542029&do=diff Egg Yolk Cell Membrane Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cell Membranes from Eggs Summary Nothing found Procedure * Begin by explaining to students that all living things are made of cells, and each cell is surrounded by a membrane. text/html 2025-09-05T11:42:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:elastic_band_universe?rev=1757072530&do=diff Elastic Band Universe Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Expanding Universe Model Summary Nothing found Procedure * Take a long rubber band and mark several evenly spaced dots along its length to represent galaxies. text/html 2025-09-06T08:34:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrolysis_of_brine?rev=1757147656&do=diff Electrolysis of Sodium Chloride (Brine) Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrolysis of Aqueous NaCl Summary Nothing found Procedure * Prepare a brine electrolyte (e.g., ~3–10% w/v NaCl in water). Pour into an electrolysis cell or beaker to near the top. text/html 2025-09-26T13:15:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrolysis_of_molten_zinc_chloride?rev=1758892533&do=diff Electrolysis of Molten Zinc Chloride Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Heat zinc chloride until it melts; no reaction occurs until it is in liquid form. text/html 2025-09-25T02:59:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrolysis_of_water?rev=1758769161&do=diff Electrolysis of Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Splitting Water with Electricity Summary Nothing found Procedure * Fill the electrolysis apparatus with dilute sodium sulfate or sulfuric acid solution , ensuring both compartments are filled completely, then close the stopcocks. text/html 2025-09-09T05:17:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electromagnetic_induction?rev=1757395044&do=diff Electromagnetic Induction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Faraday’s Law – Classic Induction Demo Summary Nothing found Procedure * Connect a solenoid in parallel to an electrometer. text/html 2025-09-10T01:24:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electromagnetic_shielding_with_faraday_cage?rev=1757467497&do=diff Electromagnetic Shielding with a Faraday Cage Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Faraday's Cage Summary Nothing found Procedure * Turn on the AM/FM radio and tune it to a station with a clear signal. text/html 2025-10-06T04:26:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electromagnetic_survey_with_magnets_and_compass?rev=1759724762&do=diff Electromagnetic Survey With Magnets and Compass Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnetic Prospecting, Compass Deflection Ore Model Summary Nothing found text/html 2025-09-05T12:09:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electromagnetic_train?rev=1757074144&do=diff Electromagnetic Train Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnetic Coil Train Summary Nothing found Procedure * Gather materials: copper wire (20 gauge), AAA battery, six neodymium magnets, dowel, and tape. text/html 2025-09-22T00:22:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrostatic_deflection_of_a_water_stream?rev=1758500570&do=diff Electrostatic Deflection of a Water Stream Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bending Water with Static Electricity Summary Nothing found Procedure * Mount a plastic cup with a small hole in its base on a retort stand above a collection tray. text/html 2025-09-22T00:28:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrostatic_deflection_of_polar_vs_nonpolar_liquids?rev=1758500924&do=diff Electrostatic Deflection of Polar vs Nonpolar Liquids Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bending of a Liquid Stream Summary Nothing found Procedure * Rub a rubber rod with fur to give it a negative static charge. text/html 2025-10-14T04:38:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrostatic_floating_rings?rev=1760416724&do=diff Electrostatic Floating Rings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Floating Plastic Ring Summary Nothing found Procedure * Cut across a thin plastic bag a few centimeters (1–2 inches) below the opening to form a ring. text/html 2025-10-05T23:36:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:electrostatic_smoke_precipitation?rev=1759707398&do=diff Electrostatic Smoke Precipitation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Removing Smoke Particles Using Static Electricity Summary Nothing found Procedure * text/html 2025-08-31T22:23:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:elephants_toothpaste?rev=1756678996&do=diff Elephant's Toothpaste Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Peroxide Whoosh Summary Nothing found Procedure A small teaspoon of solid potassium iodide, a squirt of detergent, and a few drops of food colouring are put into a measuring cylinder of any size placed into a tray. 30% Hydrogen Peroxide is added, and coloured foam is formed rapidly, spurting out of the top. text/html 2025-09-09T05:41:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:endothermic_exothermic_dissolving?rev=1757396489&do=diff Endothermic and Exothermic Dissolving Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hot and Cold Packs, Energy Changes When Substances Dissolve Summary Nothing found text/html 2025-09-14T22:14:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:energy_in_food?rev=1757888081&do=diff Energy in Food Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Burning Food, Simple Calorimetry with Food Samples Summary Nothing found Procedure * Measure 20 cm³ of water into a boiling tube and secure it in a clamp stand. text/html 2025-09-20T21:47:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:energy_stick_human_circuit?rev=1758404826&do=diff Energy Stick Human Circuit Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Human Conductor Circuit Summary Nothing found Procedure * Obtain an 'Energy Stick', which is a commercial device that lights up when a circuit is completed around it. text/html 2025-09-26T12:40:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:enthalpy_of_combustion_of_alcohols?rev=1758890447&do=diff Enthalpy of Combustion of Alcohols Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Calorimetry Summary Nothing found Procedure * Gather an alcohol burner with a chosen alcohol, a conical flask, 100 mL of water, a thermometer, a balance, a lighter, and a draft shield if available. text/html 2025-09-04T12:46:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:epsom_salt_crystals?rev=1756990004&do=diff Epsom Salt Crystals Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Supersaturated Epsom Salt Crystals Summary Nothing found Procedure * Heat water in a kettle, then let it stand 5 minutes so it is very hot but not boiling. text/html 2025-09-25T02:42:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ester_synthesis_isolation_and_purification?rev=1758768166&do=diff Ester Synthesis, Isolation and Purification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fragrant Esters: From Reaction to Purification, Fischer Esterification Summary text/html 2025-09-22T11:28:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:estimating_populations_using_quadrats?rev=1758540518&do=diff Estimating Populations Using Quadrats Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Mark out the study area to be surveyed. * Use a random method to select coordinates, such as rolling dice for vertical and horizontal axes. text/html 2025-09-25T02:42:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ethanol_purification_by_distillation?rev=1758768179&do=diff Ethanol Purification by Distillation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Distillation of Fermentation Mixture Summary Nothing found Procedure * Ferment sugar with yeast until the fermentation stops or after 1 week. text/html 2025-09-25T02:43:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:evaporating_seawater?rev=1758768193&do=diff Evaporating Seawater Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Salt from Seawater at Home Summary Nothing found Procedure * Set a shallow, clear bowl on a stable surface. Pour in warm water (not boiling). text/html 2025-09-09T22:39:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:evaporative_cooling_with_liquids?rev=1757457563&do=diff Evaporative Cooling with Liquids Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Evaporation and Cooling Summary Nothing found Procedure * Prepare one cup with a tablespoon of water and another with a tablespoon of rubbing alcohol. text/html 2025-09-27T14:00:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:evaporative_cooling_with_water_vs_alcohol?rev=1758981604&do=diff Evaporative Cooling with Water vs Alcohol Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Evaporation Rates of Liquids Summary Nothing found Procedure * Obtain two thermometers and ensure they are dry. text/html 2025-09-25T06:58:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:exothermic_zinc_copper_sulfate_reaction?rev=1758783495&do=diff Exothermic Zinc and Copper Sulfate Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Calorimetry of Zinc and Copper Sulfate Summary Nothing found Procedure * text/html 2025-09-22T13:44:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:exploding_seed_pod_model?rev=1758548658&do=diff Exploding Seed Pod Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seed Dispersal Balloon Experiment Summary Nothing found Procedure * Place a balloon over the end of a funnel. text/html 2025-10-02T03:43:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:exploring_infrared_radiation_with_a_heat_lamp?rev=1759376596&do=diff Exploring Infrared Radiation with a Heat Lamp Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Feeling Invisible Heat Summary Nothing found Procedure * Set up an infrared heat lamp in a safe, stable position. text/html 2025-09-22T12:23:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:exploring_pond_water_with_a_microscope?rev=1758543782&do=diff Exploring Pond Water with a Microscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Microscopy of Pond Life Summary Nothing found Procedure * Collect pond water in a clean container, ideally from the bottom with some sediment and plant matter for richer samples. text/html 2025-10-02T04:38:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:extrapolation_and_interpolation_with_spaghetti?rev=1759379930&do=diff Extrapolation and Interpolation With Spaghetti Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Using a Line of Best Fit with Spaghetti, Spaghetti Length and Mass Graphing text/html 2025-09-24T02:24:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:eye_dominance_test?rev=1758680674&do=diff Eye Dominance Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Miles Test Summary Nothing found Procedure * Choose a distant object, such as a clock, light switch, or picture across the room. text/html 2025-09-10T04:47:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:factors_affecting_seed_germination?rev=1757479675&do=diff Factors Affecting Seed Germination Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seed Germination Variables Summary Nothing found Procedure * Gather identical clear jars (or cups), paper towels or cotton wool, water, and one seed type (e.g., soaked lima, kidney, or mung beans). text/html 2025-09-27T12:21:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:falling_rhythm?rev=1758975704&do=diff Falling Rhythm Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gravity Beats Summary Nothing found Procedure * Cut two lengths of string, each about 3 meters long. text/html 2025-09-14T23:26:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:false_memories?rev=1757892364&do=diff False Memories Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Memory Illusion Game Summary Nothing found Procedure - Provide copies of two word lists. * If running a structured program, the instructor acts as the reader while participants are listeners. text/html 2026-02-24T22:24:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fetal_pig_dissection?rev=1771971851&do=diff Fetal Pig Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mammalian Systems in a Fetal Pig Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-09T04:21:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:film_canister_rocket?rev=1757391693&do=diff Alka-Seltzer Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Film Canister Rocket Summary Nothing found Procedure * Put on safety glasses. * Fill a plastic film canister about one-third full with water. text/html 2025-09-05T05:56:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:find_centre_of_ruler?rev=1757051773&do=diff Finding Centre of Ruler Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Center of Gravity and Friction Trick Summary Nothing found Procedure * Place a meter stick across your two index fingers. Start with one finger at each end of the stick. text/html 2025-10-02T03:11:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fire_bubbles?rev=1759374712&do=diff Fire Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hold Fire in Your Hand, Methane Bubbles Summary Nothing found Procedure * Fill a large bowl with water and add a small amount of dish soap, mixing to create soapy water. text/html 2025-09-16T06:54:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fire_tornado?rev=1758005641&do=diff Fire Tornado Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Spinning Fire Column Summary Nothing found Procedure * Roll a metal screen into a cylinder 2.5–3 feet tall, securing it with wire or staples. text/html 2025-08-30T09:22:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fireproof_balloon?rev=1756545722&do=diff Fireproof Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fire Water Balloon Summary Nothing found Procedure * Blow up one balloon with air only and tie it off. text/html 2025-09-13T14:13:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fish_dissection?rev=1757772839&do=diff Fish Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bony Fish Dissection Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2026-02-03T04:53:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fizzy_painting?rev=1770094405&do=diff Fizzy Painting Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Baking Soda Fizzy Paint, Fizzy Art with Vinegar and Baking Soda Summary Nothing found Procedure * Place cardstock or watercolor paper on a tray or baking sheet. text/html 2025-08-30T02:01:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flame_tests?rev=1756519316&do=diff Flame Tests Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Flame Test Colors Summary Nothing found Procedure * Label small beakers for each metal salt and prepare about 50 mL of ≈1.0 M aqueous solutions for BaCl2, CaCl2, CuCl2, LiCl, KCl, NaCl, and SrCl2. text/html 2025-09-02T23:23:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flaming_gummy_bear?rev=1756855435&do=diff Flaming Gummy Bear Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Screaming Gummy Bear Summary Nothing found Procedure * Set up a ring stand and clamp a borosilicate test tube so the open end points away from people and toward the fume hood interior. text/html 2025-10-13T22:08:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flammable_citrus_peel?rev=1760393323&do=diff Flammable Citrus Peel Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Orange Peel Oils and Latex Balloons Summary Nothing found Procedure * Cut a small piece of orange or lemon peel. text/html 2025-09-27T10:55:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_and_sinking_grapes?rev=1758970544&do=diff Floating and Sinking Grapes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrophobic vs. Hydrophilic Grapes Summary Nothing found Procedure * Fill a clear drinking glass with soda (any carbonated drink). text/html 2025-08-29T08:13:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_coin_on_water?rev=1756455194&do=diff Floating Coin on Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Floating Aluminium Coins Summary Nothing found Procedure * Fill a clean bowl or beaker with water. text/html 2025-09-14T22:14:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_egg?rev=1757888089&do=diff Floating Egg Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Egg Density Experiment Summary Nothing found Procedure * Fill a tall drinking glass about three-quarters full of plain water. text/html 2025-09-08T00:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_needle_compass?rev=1757291728&do=diff Floating Needle Compass Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Compass Summary Nothing found Procedure * Rub a bar magnet over a sewing needle several times in the same direction to magnetize it. text/html 2025-09-09T23:07:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_paper_clip?rev=1757459251&do=diff Floating Paper Clip Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a bowl with clean water. * Attempt to place a paperclip on the surface, notice that it sinks. text/html 2025-09-20T20:49:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_ping_pong_ball?rev=1758401389&do=diff Floating Ping Pong Ball Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bernoulli’s Principle with a Ping Pong Ball Summary Nothing found Procedure * Plug in a hair dryer and set it to blow air straight upward. text/html 2025-10-14T04:53:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:floating_soap_bubble_on_carbon_dioxide?rev=1760417634&do=diff Floating Soap Bubble on Carbon Dioxide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hovering Soap Bubble Summary Nothing found Procedure * Mix 100 ml (0.42 cup) of water, 1 tablespoon of dish soap, and 1 teaspoon of glycerin in a cup to make a bubble solution. text/html 2025-09-04T11:54:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flocculation_cleaning_water?rev=1756986860&do=diff Cleaning Water With Flocculation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cleaning Water With Alum Summary Nothing found Procedure - Collect about 1 liter of turbid water per group from a nearby pond or stream, including a little bottom sediment. Cap and bring to class. text/html 2025-09-13T14:14:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flower_dissection?rev=1757772849&do=diff Flower Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plant Reproduction: Flower Dissection Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-10T02:32:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flying_optical_illusion?rev=1757471545&do=diff Flying Optical Illusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Floating with Mirrors Summary Nothing found Procedure * Place a large flat mirror vertically on the floor, with volunteers holding it if needed. text/html 2025-08-30T12:45:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:flying_tea_bag?rev=1756557916&do=diff Flying Tea Bag Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tea bag Convection, Tea bag Rocket Summary Nothing found Procedure * Cut open a tea bag and empty out the tea. text/html 2025-09-11T09:10:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:focal_length_of_a_concave_lens?rev=1757581809&do=diff Focal Length of a Concave Lens Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Concave Lens Focal Point Summary Nothing found Procedure * Place a light box with three parallel beams on an optical table or bench. text/html 2025-09-11T09:05:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:focal_length_of_a_convex_lens?rev=1757581530&do=diff Focal Length of a Convex Lens Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Convex Lens Focal Point Summary Nothing found Procedure * Set up the light box with a single slit to produce parallel rays of light. text/html 2025-09-20T20:58:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:foil_boat_vs_foil_ball_buoyancy?rev=1758401921&do=diff Foil Boat vs Foil Ball Buoyancy Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Aluminum Foil Buoyancy Demonstration Summary Nothing found Procedure * Tear two equal sheets of aluminum foil. text/html 2025-09-17T00:40:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fold_mountains_with_towels?rev=1758069642&do=diff Fold Mountains With Towels Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Towel Plate Compression Model Summary Nothing found Procedure * Gather four towels of different colors and a flat floor or tabletop. text/html 2025-09-16T11:43:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:food_test_for_fats_and_oils?rev=1758023005&do=diff Food Test for Fats and Oils Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ethanol Test for Lipids Summary Nothing found Procedure * Place the food sample into a test tube with about 2 cm³ of ethanol. text/html 2025-09-20T11:00:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:force_table_vector_addition?rev=1758366049&do=diff Force Table Vector Addition Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vector Addition of Forces Summary Nothing found Procedure * Set the force table so 0°, 90°, 180°, and 270° align with +x, +y, −x, and −y. Install the central pin and check that pulleys spin freely. text/html 2025-09-18T05:39:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:forensic_fiber_analysis?rev=1758173997&do=diff Forensic Fiber Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Crime Scene Fiber Testing Summary Nothing found Procedure * Collect a small sample of fiber evidence. text/html 2025-09-26T12:50:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fractional_distillation_of_crude_oil?rev=1758891027&do=diff Fractional Distillation of Crude Oil Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Distilling Petroleum Mixtures Summary Nothing found Procedure * Gather a distillation setup (heat source, round-bottom flask, fractionating column, thermometer at the vapor takeoff, condenser, receiver), crude oil sample, balance, graduated cylinders or pipets, timers, and data sheets. text/html 2025-09-22T00:17:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:franklins_bells_with_van_de_graaff_generator?rev=1758500229&do=diff Franklin’s Bells With Van de Graaff Generator Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lightning Bells Demonstration Summary Nothing found Procedure * Suspend a small metal ball on a string so that it hangs freely between two unconnected metal plates. text/html 2025-09-22T00:12:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:franklins_bells?rev=1758499934&do=diff Franklin’s Bells Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Bells Summary Nothing found Procedure * Suspend a small metal ball on a string so that it hangs freely between two unconnected metal plates. text/html 2025-09-10T02:57:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:freeze_a_beaker_to_a_board?rev=1757473044&do=diff Freeze a Beaker to a Board Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ammonium Nitrate and Barium Hydroxide Cooling, Endothermic Reaction Summary Nothing found Procedure text/html 2025-08-31T03:08:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:freeze_antifreeze_with_liquid_nitrogen?rev=1756609704&do=diff Freeze Antifreeze with Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Freezing Antifreeze Summary Nothing found Procedure * Place a small sample of antifreeze in a cryogenic-safe container e.g. metal. text/html 2025-09-17T04:01:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:freeze_thaw_weathering?rev=1758081683&do=diff Freeze Thaw Weathering Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ice Wedging Demonstration Summary Nothing found Procedure * Snap a piece of pavement chalk in half to create fresh surfaces. text/html 2025-08-27T05:31:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:freezing_flowers_with_dry_ice_and_alcohol?rev=1756272695&do=diff Freezing Flowers With Dry Ice and Alcohol Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Poor man's Liquid Nitrogen Summary Nothing found Procedure * Place chunks of dry ice into a pyrex glass or metal container. text/html 2025-09-04T02:02:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:friction_block_on_inclined_plane?rev=1756951379&do=diff Friction of a Block on an Inclined Plane Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Block Sliding Down an Incline Summary Nothing found Procedure * Place one of the blocks on the flat incline. text/html 2026-02-24T22:24:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:frog_dissection?rev=1771971862&do=diff Frog Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Frog Dissection | 7th Grade Life Science - Love Them Well: text/html 2025-08-30T00:03:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:frog_natural_selection_similation?rev=1756512222&do=diff Frog Natural Selection Simulation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Frog Population and Predation Model, Natural Selection Frog Model Summary Nothing found text/html 2025-09-25T02:43:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:froth_flotation?rev=1758768204&do=diff Froth Flotation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ore Separation with Froth Summary Nothing found Procedure * Place one spatula of a sand and iron filings mixture into a test tube. text/html 2025-09-10T04:52:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fruit_dissection?rev=1757479972&do=diff Fruit Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Plant Reproduction Through Fruits Summary Nothing found Procedure * Gather several types of fruits, such as apples, peppers, beans, corn, cucumbers, and pomegranates. text/html 2025-09-27T12:13:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:fuse_with_steel_wool?rev=1758975203&do=diff Fuse with Steel Wool Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Circuit Protection with Steel Wool Summary Nothing found Procedure * Set up a simple circuit with a power source, a light bulb, and a holder for a small piece of steel wool to act as a fuse. text/html 2025-09-10T03:08:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gallium_and_aluminium_can?rev=1757473695&do=diff Gallium and Aluminium Can Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gallium Weakening Aluminum Summary Nothing found Procedure * Melt a small amount of gallium in a container using warm water. text/html 2025-09-04T02:36:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gear_ratios?rev=1756953411&do=diff Gear Ratios Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gears as Simple Machines Summary Nothing found Procedure * Print and color a gear pattern. * Tape the pattern to a Styrofoam tray and have an adult cut out the gears. text/html 2025-09-21T23:46:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:geiger_counter_and_radiation_shielding?rev=1758498416&do=diff Geiger Counter and Radiation Shielding Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring Radiation Penetration Summary Nothing found Procedure * Turn on the Geiger counter and ensure the speaker is audible so clicks can be heard for each detection event. text/html 2025-09-10T03:14:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gelatin_volcano_model?rev=1757474053&do=diff Gelatin Volcano Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Edible Magma Injection, Single-Serving Volcanism Summary Nothing found Procedure * Refrigerate gelatin cups until cool and firm. text/html 2025-09-08T12:45:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:genetic_inheritance_in_brassica_rapa?rev=1757335510&do=diff Genetic Inheritance in Brassica rapa Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inheritance with Fast Plants Summary Nothing found Procedure * Begin with seeds from two crossbred parent lines that are homozygous dominant for one trait and homozygous recessive for the other. text/html 2025-09-22T12:05:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:genetic_traits_survey?rev=1758542735&do=diff Genetic Traits Survey Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Investigating Inherited Traits Summary Nothing found Procedure * Provide students with a list of observable genetic traits (e.g., earlobe attachment, tongue rolling, dimples, handedness, freckles, hair texture, hand clasping, red-green colorblindness, hairline shape, PTC tasting). text/html 2025-09-08T06:35:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:genie_in_a_bottle?rev=1757313320&do=diff Genie in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrogen Peroxide Genie Summary Nothing found Procedure * Put on safety goggles and protective equipment. text/html 2025-09-10T03:44:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:genie_in_the_bottle_rope_trick?rev=1757475893&do=diff Genie in the Bottle Rope Trick Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Suspended Rope Illusion Summary Nothing found Procedure * Hide a small ball in your hand using palming. text/html 2025-09-10T03:50:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:geological_timeline_with_toilet_paper?rev=1757476230&do=diff Geological Timeline with Toilet Paper Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Toilet Roll of Time Summary Nothing found Procedure * Count out 46 sheets of toilet paper. Each sheet represents 100 million years. text/html 2025-09-08T06:04:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:giant_pendulum?rev=1757311462&do=diff Giant Pendulum Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Conservation of Energy Pendulum Summary Nothing found Procedure * Suspend a large pendulum from the ceiling of the lecture hall. text/html 2025-09-08T06:12:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:globe_and_heat_lamp_seasons_model?rev=1757311957&do=diff Globe and Heat Lamp Seasons Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modelling the Seasons Summary Nothing found Procedure * Record the latitude and longitude of your location and mark it on a globe with a small square of black cardboard. text/html 2025-08-30T12:53:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:glow_sticks_temperature?rev=1756558421&do=diff Glow Sticks at Different Temperatures Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Glow Sticks Temperature Effects Summary Nothing found Procedure * Snap and shake three glow sticks of the same color to activate them. text/html 2025-09-11T00:16:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:glowing_oobleck?rev=1757549789&do=diff Glowing Oobleck Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Halloween Blacklight Oobleck Summary Nothing found Procedure * Gather cornstarch, tonic water (containing quinine), a spoon, a container, and a blacklight. text/html 2025-09-09T04:53:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:glowing_pickle?rev=1757393622&do=diff Glowing Pickle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electric Pickle Summary Nothing found Procedure * Place a pickle on an insulating surface such as a glass jar. text/html 2025-09-03T05:12:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:glowstick_dissection?rev=1756876355&do=diff Glowstick Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Chemiluminescence Painting Summary Nothing found Procedure * Put on safety glasses and gloves before handling glowsticks. text/html 2025-09-05T12:27:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:golden_rain?rev=1757075231&do=diff Golden Rain Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lead Iodide Precipitation Summary Nothing found Procedure * Dissolve 1.65 g of lead(II) nitrate in 400 mL of distilled water in one beaker. text/html 2025-09-22T12:31:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gram_staining?rev=1758544297&do=diff Gram Staining Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Differentiating Bacteria with Gram Stain Summary Nothing found Procedure * Use aseptic technique to prepare a bacterial smear on a clean microscope slide. text/html 2025-09-22T10:44:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:grasshopper_dissection?rev=1758537849&do=diff Grasshopper Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Orthoptera Dissection Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-22T13:37:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gravitropism_in_seedling_stalks?rev=1758548244&do=diff Gravitropism in Seedling Stalks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seedling Stalk Gravitropism Summary Nothing found Procedure * Cut a fresh seedling stalk (hypocotyl). text/html 2025-09-25T10:12:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gravity_filtration?rev=1758795175&do=diff Gravity Filtration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Set up a ring stand with a ring clamp and place a funnel over a receiving flask. Use a clay triangle if needed to support the funnel. text/html 2025-09-21T22:57:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gravity_visualized?rev=1758495460&do=diff Gravity Visualized Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gravity Well, Fabric of Spacetime Summary Nothing found Procedure * Build the frame: assemble a circular or square PVC frame on legs tall enough for students to see underneath; tighten joints so the surface will be drum-taut. text/html 2025-09-16T07:00:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:greenhouse_analogy_with_chocolate?rev=1758006036&do=diff Greenhouse Analogy with Chocolate Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Melting Chocolate Greenhouse Model Summary Nothing found Procedure * Begin with a discussion about why Earth is warmer than the Moon, even though both receive the same sunlight. Explain that Earth’s atmosphere, rich in greenhouse gases, traps heat. text/html 2025-09-04T12:41:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:grow_egg_geodes?rev=1756989661&do=diff Grow Egg Geodes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Eggshell Alum Geodes Summary Nothing found Procedure * Clean a raw egg under warm running water and dry it. text/html 2025-10-06T04:04:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:growing_alum_crystals?rev=1759723476&do=diff Growing Alum Crystals Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Potassium Alum Crystals Summary Nothing found Procedure * Dissolve 90 g of potassium alum powder in 500 mL of hot water, stirring until all the alum is dissolved. text/html 2025-09-25T03:06:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:growing_bismuth_crystals?rev=1758769564&do=diff Growing Bismuth Crystals Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Melt solid bismuth in a heat-safe container, such as a crucible. (A campfire, camp stove, or burner can be used for heating.) text/html 2025-09-04T12:58:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:growing_crystals_on_string?rev=1756990681&do=diff Growing Crystals on String Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cubic Rock Salt Crystals Summary Nothing found Procedure * Heat water in a kettle, let it cool a few minutes, and pour warm (not boiling) water into a clean glass or jar. text/html 2025-10-14T04:02:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:gummy_bear_osmosis?rev=1760414553&do=diff Gummy Bear Osmosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gummy Bear Water Absorption Summary Nothing found Procedure * Label several glass containers with the names of the solutions (e.g., water, salt water, sugar water, baking soda water, milk, soda, and vinegar). text/html 2025-09-11T23:00:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hair_sample_analysis?rev=1757631607&do=diff Hair Sample Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Forensic Hair Comparison Summary Nothing found Procedure * Prepare a hair sample sheet with taped hairs from each suspect, along with one hair from the crime scene (the culprit’s). text/html 2025-09-29T22:45:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:halloween_clock_reaction?rev=1759185932&do=diff Halloween Clock Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Old Nassau Reaction Summary Nothing found Procedure * See method in links below. Links Halloween clock reaction - Hegelrast: text/html 2025-09-24T06:06:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:halogen_displacement?rev=1758693982&do=diff Halogen Displacement Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Halogen Reactivity Series Summary Nothing found Procedure * Place a few drops of each potassium halide salt solution (KCl, KBr, KI) into separate wells on a spotting tile. text/html 2025-09-14T23:53:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:handgrip_strength_test?rev=1757894005&do=diff Handgrip Strength Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Grip Dynamometer Test Summary Nothing found Procedure * Gather a calibrated handgrip dynamometer, data sheet, and a timer; record age, sex, hand dominance, height, and body mass. text/html 2025-09-22T05:53:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:handshake_activity_disease_transmission?rev=1758520398&do=diff Handshake Activity Disease Transmission Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Condom and Handshake Activity Summary Nothing found Procedure * Give one student a rubber glove to wear, representing a condom. text/html 2025-09-11T22:52:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:handwriting_analysis?rev=1757631174&do=diff Handwriting Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Forensic Handwriting Comparison Summary Nothing found Procedure * Prepare copies of a crime scene note and handwriting samples from three suspects. text/html 2025-09-10T12:10:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:happy_and_sad_balls?rev=1757506259&do=diff Happy and Sad Balls Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Elastic and Inelastic Collisions Summary Nothing found Procedure * Obtain a “happy” ball (neoprene rubber) and a text/html 2025-09-22T13:10:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hardy_weinberg_bead_simulation?rev=1758546623&do=diff Hardy Weinberg Bead Simulation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Random Mating and Selection Model Summary Nothing found Procedure * See links below for method. text/html 2025-09-10T12:16:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:harmonic_knives?rev=1757506619&do=diff Harmonic Knives Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vibrating Knife Demonstration Summary Nothing found Procedure * Hold a table knife gently by the handle and strike the blade with a pen. Listen to the clear ringing sound. text/html 2025-09-14T23:40:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:harvard_step_test?rev=1757893247&do=diff Harvard Step Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: VO2 Max Step Test Summary Nothing found Procedure * Prepare the equipment: a step or platform (20 inches for males, 16 inches for females), a stopwatch, and a metronome or cadence tape. text/html 2025-09-24T02:19:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hearing_frequency_test?rev=1758680383&do=diff Hearing Frequency Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: High and Low Frequency Hearing Test Summary Nothing found Procedure * Use an online video from the links below). text/html 2025-09-19T06:48:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:heart_rate_recovery?rev=1758264500&do=diff Heart Rate Recovery Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Post-Exercise Heart Rate Drop Summary Nothing found Procedure * Perform a workout or exercise session that raises heart rate substantially. text/html 2025-08-29T09:50:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:home_made_electroscope?rev=1756461020&do=diff Home Made Electroscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electroscope Summary Nothing found Procedure * Straighten a paperclip and bend one end into a “U” shape. text/html 2025-09-09T05:24:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:homemade_electrophorus?rev=1757395475&do=diff Homemade Electrophorus Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Induction Device Summary Nothing found Procedure * Rub a foam plate with a wool sock or rag to charge it negatively by friction. text/html 2025-09-10T12:38:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:homemade_hot_air_balloon?rev=1757507890&do=diff Hot Air Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hair Dryer Sky Lantern Summary Nothing found Procedure * Find a very thin, lightweight plastic bag (such as a dry-cleaner bag or thin trash can liner). text/html 2025-10-14T04:23:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:homemade_lightning_with_a_pie_pan?rev=1760415839&do=diff Homemade Lightning with a Pie Pan Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tamed Lightning Summary Nothing found Procedure * Gather materials: a polystyrene (styrofoam) food box, an aluminum pie pan, a wool sock or piece of wool fabric, scissors, and tape. text/html 2025-09-25T02:43:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:homemade_water_purifier_model?rev=1758768213&do=diff Homemade Water Purifier Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Make a Water Filter Summary Nothing found Procedure * Ask an adult to cut a clean 2-liter plastic bottle in half. Place the top half upside down into the bottom half to form a funnel. text/html 2025-09-28T14:40:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hot_and_cold_hand_test?rev=1759070413&do=diff Hot and Cold Hand Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Temperature Perception Experiment Summary Nothing found Procedure * Prepare three containers: one with ice-cold water, one with room-temperature water, and one with comfortably warm water. text/html 2025-09-17T03:56:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hot_water_condensation?rev=1758081364&do=diff Hot Water Condensation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water Cycle Condensation Summary Nothing found Procedure * Boil water and carefully pour it into a transparent plastic cup until it is two-thirds full. text/html 2025-08-29T09:32:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:how_heat_sings?rev=1756459952&do=diff How Heat Sings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: A Hot Tone Summary Nothing found Procedure * Light a propane torch and set it to its hottest setting. text/html 2025-10-05T22:47:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:how_salt_affects_freezing_of_water?rev=1759704456&do=diff How Salt Affects Freezing of Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lowering the Freezing Point of Water Summary Nothing found Procedure * Label two bowls “Bowl 1” and “Bowl 2.” text/html 2025-09-04T01:54:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:human_arm_third_class_levers?rev=1756950864&do=diff Third Class Levers in the Human Arm Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Human Arm as a Lever Summary Nothing found Procedure * Fill a bucket halfway with sand and place your forearm flat on a table, palm up, with your hand extending past the edge. text/html 2025-09-22T03:08:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:human_cheek_cells_under_microscope?rev=1758510501&do=diff Human Cheek Cells Under Microscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cheek Cell Microscope Slide Summary Nothing found Procedure * Use a clean toothpick to gently scrape the inside lining of your cheek. text/html 2025-09-22T01:40:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:human_reflexes?rev=1758505237&do=diff Human Reflexes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Reflex Action Demonstrations Summary Nothing found Procedure * For the knee-jerk reflex: Have a student sit with legs dangling. Gently tap the tendon just below the kneecap with the side of your hand or a soft object. Watch for the leg to kick forward. text/html 2025-09-06T01:48:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hydrogen_balloon_explosion?rev=1757123299&do=diff Hydrogen Balloon Explosion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrogen vs. Helium Combustion Summary Nothing found Procedure * Fill one balloon with helium and another with hydrogen. text/html 2025-09-30T14:07:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hydrogen_fuel_cell?rev=1759241279&do=diff Hydrogen Fuel Cell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrogen-Powered Electricity Summary Nothing found Procedure * Assemble the commercially available hydrogen fuel cell kit according to instructions. text/html 2025-09-06T01:37:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hydrogen_mini_rocket?rev=1757122646&do=diff Hydrogen Mini Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrogen–Oxygen Fuel Rocket Summary Nothing found Procedure * Generate hydrogen gas by reacting zinc with hydrochloric acid. text/html 2025-09-06T01:43:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hydrogen_oxygen_exploding_bubbles?rev=1757123025&do=diff Hydrogen and Oxygen Exploding Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrolysis Bubbles Explosion Summary Nothing found Procedure * Set up a side-arm boiling tube with lead foil electrodes, a bung, and a delivery tube connected to a beaker of soapy water. text/html 2025-09-25T05:54:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:hydrophobic_coatings?rev=1758779683&do=diff Hydrophobic Coatings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water-Repellent Surfaces Summary Nothing found Procedure DIY Sand Method: * Spread colored sand evenly in a plate or shallow container. text/html 2025-09-27T11:01:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ice_cube_on_a_string?rev=1758970864&do=diff Ice Cube on a String Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Refreezing ice Summary Nothing found Procedure * Fill a glass to the top with water. * Place an ice cube into the glass. text/html 2025-08-30T03:47:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:impact_craters?rev=1756525622&do=diff Impact Craters Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Candy Cratering Summary Nothing found Procedure * Fill a tray with 2 to 3 cm of flour or sand and level the surface. Sprinkle a thin, even layer of cocoa powder over the top. text/html 2025-09-14T22:59:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inattentional_blindness?rev=1757890798&do=diff Inattentional Blindness Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Failure to Notice Effect Summary Nothing found Procedure * Have participants focus on a primary task, such as counting passes in a ball game video or following a moving object. text/html 2025-09-03T21:34:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inclined_plane_spring_scale?rev=1756935256&do=diff Inclined Plane Spring Scale Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ramp Mechanical Advantage Demonstration, How Angle Affects Effort on a Ramp Summary Nothing found text/html 2025-08-30T00:33:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inertia_hat?rev=1756514012&do=diff Inertia Hat Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton's Inertia Hat Summary Nothing found Procedure - Use wire cutters to remove the hook from a wire coat hanger. text/html 2025-08-30T08:57:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inertia_which_string_breaks?rev=1756544276&do=diff Inertia - Which String Breaks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inertia of a stone, A quick pull is a break for Newton. Summary Nothing found Procedure text/html 2025-08-30T09:09:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inseparable_books?rev=1756544952&do=diff Inseparable Books Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Friction Between Notebook Pages Summary Nothing found Procedure * Place two notebooks on a flat surface with their bindings facing inward. text/html 2025-10-02T03:16:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:instant_snow_polymer?rev=1759374966&do=diff Instant Snow Polymer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sodium Polyacrylate Snow Summary Nothing found Procedure * Place a teaspoon-sized portion of instant snow polymer into a clear cup or tray. text/html 2025-10-06T00:21:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:interactive_food_web_game?rev=1759710108&do=diff Interactive Food Web Game Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ecosystem Connections Game, Yarn Food Web Summary Nothing found Procedure * Prepare a food web diagram for an endangered species ecosystem. text/html 2025-09-21T23:56:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inverse_square_law_of_radiation?rev=1758498994&do=diff Inverse-Square Law of Radiation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Geiger Counter Inverse-Square Demonstration Summary Nothing found Procedure * Place a radioactive source near a Geiger counter detector at the smallest safe distance (e.g., 20 mm). text/html 2025-09-22T00:00:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inverse_square_law_with_balloon?rev=1758499246&do=diff Inverse Square Law With Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Solar Power and Distance Demonstration Summary Nothing found Procedure * Inflate a round balloon to about 10 cm in diameter and imagine the Sun at its center. text/html 2025-09-22T00:03:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:inverse_square_law_with_light?rev=1758499427&do=diff Inverse Square Law with Light Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Light Intensity and Distance Summary Nothing found Procedure * Set up a lamp on a stand in a darkened room. text/html 2025-09-11T06:59:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:investigating_law_of_reflection?rev=1757573943&do=diff Investigating the Law of Reflection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring Angles of Incidence and Reflection Summary Nothing found Procedure * Place a sheet of plain A3 paper on the desk and draw a straight horizontal line across the middle. text/html 2025-09-23T05:37:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:investigating_plant_growth?rev=1758605832&do=diff Investigating Plant Growth Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seedling Growth Fair Test Summary Nothing found Procedure * Gather identical seedlings (or seeds), pots with soil, labels, popsticks, marker, measuring jug, salt, water, and a dark cupboard or box. text/html 2025-09-11T07:16:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:investigating_refraction_and_snells_law?rev=1757575011&do=diff Investigating Refraction and Snell's Law Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Refractive Index of Glass Summary Nothing found Procedure * Place a glass block on a sheet of plain paper and carefully draw around it. text/html 2025-10-06T05:49:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:iodine_clock?rev=1759729742&do=diff Iodine Clock Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Starch–Iodine Reaction Timing Summary Nothing found Procedure * Prepare solution A: 0.02 M potassium iodate (KIO₃). text/html 2025-10-02T03:08:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:iodine_vapor_fingerprints?rev=1759374482&do=diff Iodine Vapor Fingerprints Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Revealing Fingerprints with Iodine Fuming Summary Nothing found Procedure * Place a sheet of paper with a fingerprint inside a sealable container such as a jar or plastic box. text/html 2025-09-01T06:07:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ionic_cut_and_match?rev=1756706840&do=diff Ionic Cut and Match Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ion Matching Game Summary Nothing found Procedure * Prepare three sets of cards: one with cation names, one with anion names, and one with chemical formulas. text/html 2025-09-25T02:43:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:iron_and_sulfur_compound_formation?rev=1758768224&do=diff Iron and Sulfur Compound Formation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mixture vs Compound Demonstration Summary Nothing found Procedure * Combine iron filings and sulfur powder in a container and mix well to form a heterogeneous mixture. text/html 2025-08-30T09:59:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:iron_in_cereal?rev=1756547981&do=diff Iron in Cereal Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: How Much Iron is in Cereal Summary Nothing found Procedure * Blend cereal and water until completely smooth. text/html 2025-09-07T03:24:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:iron_thiocyanate_equilibrium?rev=1757215478&do=diff Equilibrium of Iron (III) Thiocyanate Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ferric Thiocyanate Equilibrium Summary Nothing found Procedure * Prepare the ferric thiocyanate solution by mixing equal volumes of dilute ferric chloride solution and potassium thiocyanate solution. text/html 2025-09-08T11:21:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:jumping_coin_with_bernoullis_principle?rev=1757330476&do=diff Jumping Coin with Bernoulli’s Principle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Coin Jump into Cup Summary Nothing found Procedure * Place a coin on a flat surface near the rim of a lightweight cup. text/html 2025-09-05T04:59:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:kettle_power?rev=1757048367&do=diff Kettle Power Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Kettles by Power Output Summary Nothing found Procedure * Plug each kettle into a separate power meter and wall socket (do not use extension leads). text/html 2026-02-24T22:24:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:kidney_dissection?rev=1771971873&do=diff Kidney Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Urinary System Structure and Function Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-09T07:21:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lactase_breakdown_of_lactose?rev=1757402507&do=diff Lactase Breakdown of Lactose Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Testing Lactase Using Milk Sugar Summary Nothing found Procedure * Prepare a 2 to 4 percent lactose solution in tap water or use lactose-containing milk diluted 1 to 1 with tap water to reduce opacity. text/html 2025-08-30T11:12:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lake_stratification_overturn_in_jar?rev=1756552334&do=diff Lake Stratification (Overturn) in a Jar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: [ * ] Summary Nothing found Procedure * Fill one jar to the brim with warm water and red food coloring; fill the second jar to the brim with cold water and blue food coloring. Place both jars in a large tub to catch spills. text/html 2025-09-17T05:19:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:land_vs_water_heating?rev=1758086381&do=diff Land vs Water Heating Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Differential Heating of Land and Water Summary Nothing found Procedure * Fill one beaker with 200 mL of sand or soil and another with 200 mL of water. text/html 2025-08-30T11:25:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:laser_microscope?rev=1756553144&do=diff Laser Microscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Viewing Microbes with a Laser and Water Droplet Summary Nothing found Procedure * Fill a syringe with pond water or another sample containing microorganisms. text/html 2025-09-12T04:32:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lava_flow_races?rev=1757651557&do=diff Lava Flow Races Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Volcano Lava Flow Simulation Summary Nothing found Procedure * Place a flat board at an angle to act as a slope. text/html 2025-10-06T04:34:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:leach_mining?rev=1759725253&do=diff Leach Mining Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Acid Leaching of Copper Ore Summary Nothing found Procedure * Place a small amount of copper carbonate (the model mineral) into a large beaker. text/html 2025-09-05T12:34:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lead_iodide_precipitation?rev=1757075686&do=diff Lead Iodide Precipitation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Golden Rain Summary Nothing found Procedure * Dissolve lead(II) nitrate in water to form a clear solution. text/html 2025-09-13T14:36:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lead_storage_battery?rev=1757774205&do=diff Lead Storage Battery Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rechargeable Lead-Acid Cell Summary Nothing found Procedure * Prepare two lead electrodes: one made of lead metal and the other coated with lead dioxide (or simulate this with treated lead strips). text/html 2025-09-25T02:43:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:leaf_chromatography?rev=1758768236&do=diff Leaf Chromatography Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Separating Plant Pigments Summary Nothing found Procedure * Collect green leaves from several tree species, keeping each type separate. text/html 2025-10-06T00:27:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:leaf_classification?rev=1759710440&do=diff Leaf Classification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sorting Leaves by Attributes Summary Nothing found Procedure * Take a nature walk around your school, garden, or local park to collect a variety of leaves from different trees and bushes. text/html 2025-09-11T05:38:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:leaf_disk_photosynthesis?rev=1757569123&do=diff Leaf Disk Photosynthesis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Floating Leaf Disk Experiment Summary Nothing found Procedure * Prepare three clear cups with about 300 mL water each; dissolve a small pinch of baking soda and 1 drop of dish soap in each and stir gently. text/html 2025-09-19T00:53:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:learning_curves_in_sports_skills?rev=1758243203&do=diff Learning Curves in Sports Skills Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Motor Skill Acquisition, Practice Makes Progress Summary Nothing found Procedure * Select one skill for the whole class (e.g., golf putting, basketball free throws, dart/beanbag target throws, sport stacking, table tennis keep-ups, agility ladder or cone-slalom). text/html 2025-09-19T00:45:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:learning_new_skills_mirror_maze?rev=1758242729&do=diff Learning New Skills Mirror Maze Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Motor Learning and Memory Experiment Summary Nothing found Procedure * Place a star outline basic maze in front of a vertical or forward-tilting mirror. text/html 2025-08-31T03:34:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:led_color_change_in_liquid_nitrogen?rev=1756611254&do=diff LED Color Change in Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cryogenic LED Demonstration Summary Nothing found Procedure * Connect an LED to a safe low-voltage battery circuit. text/html 2025-09-05T05:42:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:led_photocell?rev=1757050945&do=diff LED Photocell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: LED Photoelectric Effect Demonstration Summary Nothing found Procedure * Insert a clear green LED into a piece of card and mount it in a clamp stand. text/html 2025-09-06T01:27:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lemon_juice_invisible_ink?rev=1757122068&do=diff Lemon Juice Invisible Ink Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Secret Messages with Citrus Summary Nothing found Procedure * Cut a lemon in half and squeeze the juice into a small bowl. text/html 2025-09-06T01:17:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:length_of_digestive_system?rev=1757121460&do=diff Length of the Digestive System Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Long Journey of Your Food Summary Nothing found Procedure * Measure sections of rope: mouth (2 inches), esophagus (10 inches), small intestine (22 feet), and large intestine (6 feet). text/html 2025-09-08T10:32:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lenzs_law_tubes?rev=1757327529&do=diff Lenz’s Law Tubes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Falling Magnet in a Tube, Eddy Currents Summary Nothing found Procedure * Secure a long aluminum tube vertically using a rod and stand, or hold it over a padded surface such as sandbags. text/html 2025-09-04T02:10:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:levers_in_action?rev=1756951819&do=diff Levers in Action Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Machines: Levers Summary Nothing found Procedure * Gather several examples of levers (e.g., teaspoon and tin, pliers, tweezers, scissors, nutcracker, stapler). text/html 2025-09-27T09:48:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:levitating_tinsel?rev=1758966532&do=diff Levitating Tinsel Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Flying Tinsel, Levitating Tinsel Summary Nothing found Procedure * Make a loop of aluminized tinsel, leaving two ends (legs) hanging. text/html 2025-09-10T02:21:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:light_a_match_with_superheated_steam?rev=1757470877&do=diff Light a Match With Superheated Steam Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Steam vs Paper and Matches Summary Nothing found Procedure * Generate steam at atmospheric pressure by boiling water in a flask or tin. text/html 2025-09-05T01:41:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:light_refraction_arrow_changes_direction?rev=1757036515&do=diff Light Refraction – Arrow Changes Direction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Reversing Arrow, Glass and Water Refraction Demonstration Summary Nothing found text/html 2025-09-09T09:48:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:limewater_test_for_carbon_dioxide?rev=1757411319&do=diff Limewater Test for Carbon Dioxide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Test for Carbon Dioxide Gas Summary Nothing found Procedure * Prepare a test tube or small beaker containing limewater (calcium hydroxide solution). Limewater can be made by adding pieces of calcium metal to distilled water. text/html 2025-08-30T09:35:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:limiting_reactant?rev=1756546540&do=diff Limiting Reactant Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Limiting Reagents, Limiting Reagents Vinegar and Baking Soda Summary Nothing found Procedure * Fill five Erlenmeyer flasks with 70 mL of vinegar each. text/html 2025-08-27T02:38:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:limp_celery?rev=1756262287&do=diff Limp Celery Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Celery Osmosis, Celery Dehydration and Osmosis Summary Nothing found Procedure * Prepare two containers: one with fresh water and one with salt water (stir to dissolve thoroughly). text/html 2025-08-31T03:03:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_banana_hammer?rev=1756609412&do=diff Liquid Nitrogen Banana Hammer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cryogenic Banana Hammer Summary Nothing found Procedure * Put on safety glasses and cryogenic gloves. text/html 2025-08-31T03:29:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_freezing_bouncy_ball?rev=1756610979&do=diff Freezing a Bouncy Ball in Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Unbouncy Ball Experiment Summary Nothing found Procedure * Place a bouncy ball into a container of liquid nitrogen using tongs. text/html 2025-08-31T03:47:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_freezing_fruit?rev=1756612071&do=diff Liquid Nitrogen Freezing Fruit Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cryogenic Fruit Shattering Summary Nothing found Procedure * Put on safety glasses and cryogenic gloves. text/html 2025-09-14T22:14:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_freezing_marshmallows?rev=1757888099&do=diff Liquid Nitrogen Freezing Marshmallows Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dragon’s Breath Marshmallows Summary Nothing found Procedure * Fill a large insulated bowl with liquid nitrogen. text/html 2025-08-31T02:51:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_hot_water?rev=1756608691&do=diff Liquid Nitrogen in Hot Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Liquid Nitrogen Dense Fog Summary Nothing found Procedure * Heat water in a beaker until it is nearly boiling. text/html 2025-08-31T02:39:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_hovercraft?rev=1756607981&do=diff Liquid Nitrogen Hovercraft Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Break chalk into small pieces. * Place the chalk pieces into a container of liquid nitrogen until thoroughly cooled. text/html 2025-09-14T22:15:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_ice_cream?rev=1757888110&do=diff Liquid Nitrogen Ice Cream Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Prepare a vanilla ice cream base using milk, sugar, cornstarch, and vanilla. text/html 2025-08-31T02:58:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_shrinking_balloon?rev=1756609108&do=diff Liquid Nitrogen Shrinking Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Liquid Nitrogen and a Balloon Summary Nothing found Procedure * Put on safety glasses and cryogenic gloves. text/html 2025-08-31T03:12:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_smashing_flowers?rev=1756609958&do=diff Smashing Flowers with Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cryogenic Flowers, Shattering Flowers Demonstration Summary Nothing found Procedure text/html 2025-08-31T02:40:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_teapot?rev=1756608019&do=diff Liquid Nitrogen Teapot Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Liquid Nitrogen Tea Kettle, Cryogenic Whistling Kettle Summary Nothing found Procedure * Obtain a whistling-style metal teapot (the type that whistles when steam escapes). text/html 2025-08-31T02:53:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:liquid_nitrogen_volcano?rev=1756608839&do=diff Liquid Nitrogen Volcano Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Liquid Nitrogen Bubbles Summary Nothing found Procedure * Fill a large beaker or container with warm water. text/html 2025-09-27T12:30:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:living_or_not?rev=1758976224&do=diff Living or Not? Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Glue Monsters - Are They Alive? Summary Nothing found Procedure * Place a Petri dish on an overhead projector. text/html 2025-09-22T10:44:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lizard_dissection?rev=1758537868&do=diff Lizard Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Anole Lizard Dissection || Take Me To Your Lizard [EDU] - Silvergrass Institute: text/html 2025-08-29T09:13:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lost_volume?rev=1756458838&do=diff The Lost Volume Demonstration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Volumes Don't Always Add Up, 50 Plus 50 Doesn't Always Equal 100. Summary Nothing found text/html 2025-09-08T06:19:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:luminol_chemiluminescence?rev=1757312388&do=diff Luminol Chemiluminescence Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Blue Glow Reaction Summary Nothing found Procedure * Prepare stock solution A: In a beaker with 100 mL water, dissolve 0.18 g luminol and add 3.0 mL sodium hydroxide solution (1 M). text/html 2025-09-10T03:58:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:luminous_powder_germ_spread?rev=1757476731&do=diff Luminous Powder Germ Spread Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: UV Hand Hygiene Training Summary Nothing found Procedure * Apply a small amount of luminous powder or lotion evenly to students’ hands, as though applying moisturizer. text/html 2025-09-22T23:43:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lung_capacity_test?rev=1758584595&do=diff Lung Capacity Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bottle and Tubing Lung Capacity Summary Nothing found Procedure * Gather a large clear plastic bottle, a container or sink of water, a measuring jug, a waterproof marker, and a length of rubber or plastic tubing. text/html 2025-09-22T10:44:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lung_dissection?rev=1758537878&do=diff Lung Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Lungs dissection - GCSE science - Alistair Rollinson: text/html 2025-10-22T09:02:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lycopodium_powder_fireball?rev=1761123726&do=diff Lycopodium Powder Fireball Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dust Explosion Demonstration Summary Nothing found Procedure Part A. Slow combustion * Place a small pile of lycopodium powder on a ceramic mat. text/html 2025-09-15T06:29:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lying_on_a_bed_of_nails?rev=1757917781&do=diff Lying on a Bed of Nails Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pressure and Surface Area Summary Nothing found Procedure Links Bed of Nails - Harvard Natural Sciences Lecture Demonstrations: text/html 2025-09-28T14:10:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:lynx_hare_population_cycle_game?rev=1759068602&do=diff Lynx–Hare Population Cycle Game Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Lynx Eats the Hare Summary Nothing found Procedure * See method in links below. Links text/html 2025-09-20T20:29:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magdeburg_hemispheres_with_suction_cups?rev=1758400163&do=diff Magdeburg Hemispheres with Suction Cups Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Suction Cup Magdeburg Demo Summary Nothing found Procedure * Wipe the rubber faces of two glass-handling suction cups so they are clean and dry. text/html 2025-09-25T04:02:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magic_sand?rev=1758772941&do=diff Magic Sand Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrophobic Sand Summary Nothing found Procedure Making a Sand Tower: * Roll a small piece of paper into a tube and place it upright in an empty plastic bowl. text/html 2025-09-30T10:11:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnesium_and_steam_reaction?rev=1759227092&do=diff Magnesium and Steam Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrogen Production from Magnesium and Steam Summary Nothing found Procedure * Refer to below links for method. text/html 2025-09-20T21:54:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnetic_fields_with_iron_filings?rev=1758405276&do=diff Magnetic Fields with Iron Filings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnet Field Patterns Summary Nothing found Procedure * Place a sheet of paper or transparency over a bar magnet to prevent filings from sticking to it. text/html 2025-09-05T05:15:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnetic_force_and_separation_distance?rev=1757049354&do=diff Magnetic Force and Separation Distance Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inverse Square Law of Magnetism Summary Nothing found Procedure * Set up two bar magnets so that their poles face each other at varying distances. text/html 2025-09-21T01:13:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnetic_levitation_with_pyrolytic_graphite?rev=1758417203&do=diff Magnetic Levitation with Pyrolytic Graphite Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Diamagnetism of Pyrolytic Graphite Summary Nothing found Procedure * Place several small neodymium magnets (e.g., 1×1 cm) side by side to create a magnetic base. text/html 2025-09-25T02:54:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnetic_separation_of_sand_and_iron_filings?rev=1758768873&do=diff Magnetic Separation of Sand and Iron Filings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnetic Separation Summary Nothing found Procedure * Place equal amounts of sand and iron filings into a plastic cup. text/html 2025-10-06T01:29:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:magnetic_shielding?rev=1759714166&do=diff Magnetic Shielding Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Blocking Magnetic Fields Summary Nothing found Procedure * See links for below for experiment set up. text/html 2025-09-18T05:19:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:make_a_barometer?rev=1758172784&do=diff Make a Barometer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Jar Barometer Summary Nothing found Procedure * Cut the neck off a balloon and stretch the remaining part tightly over the opening of a jar. text/html 2025-10-06T03:52:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:make_a_thermometer?rev=1759722738&do=diff Make a Thermometer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Liquid Thermometer Summary Nothing found Procedure * Use a permanent marker to mark a clear plastic drinking straw with one centimeter intervals from the bottom up. text/html 2025-10-14T05:16:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:make_molecular_models?rev=1760419007&do=diff Make Molecular Models Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Use a modelling kit to make various molecular compounds including basic inorganic compounds, organic compounds, and various hydrdocarbons (to investigate formula). text/html 2025-10-14T04:11:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:make_rainbow_with_a_cd?rev=1760415097&do=diff Make Rainbow With a CD Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Creating Light Patterns with a CD Summary Nothing found Procedure * Gather materials: a blank or old CD, paper, scissors, tape, and a pencil. text/html 2025-08-31T09:14:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:make_vacuum_cleaner?rev=1756631695&do=diff Make a Vacuum Cleaner Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: DIY Vacuum Cleaner Summary Nothing found Procedure * Cut a 700 mL plastic bottle into two parts as shown in the guide. text/html 2025-09-29T22:32:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_bakelite?rev=1759185146&do=diff Making Bakelite Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Phenol-Formaldehyde Condensation Polymer Summary Nothing found Procedure * See links below for full method. text/html 2025-09-18T05:27:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_casein_plastic?rev=1758173250&do=diff Making Casein Plastic Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Bioplastic from Milk Summary Nothing found Procedure * Heat 1 cup of full cream milk in a microwave-safe container until steaming but not boiling. text/html 2025-09-06T08:29:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_chlorine_gas?rev=1757147349&do=diff Making Chlorine Gas Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Preparation of Chlorine from Permanganate Summary Nothing found Procedure * Place a small quantity of potassium permanganate crystals into a flask. text/html 2025-09-08T00:00:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_esters_in_test_tube?rev=1757289631&do=diff Making Esters in Test Tubes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ester Synthesis Lab Summary Nothing found Procedure * Prepare a data table listing which alcohols and carboxylic acids will be combined, leaving space for observations. text/html 2025-09-27T12:44:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_ferrofluids?rev=1758977045&do=diff Making Ferrofluids Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: DIY Ferrofluid Summary Nothing found Procedure * Pour a thin layer of vegetable oil into a shallow dish. text/html 2025-09-12T00:59:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_fossils?rev=1757638758&do=diff Making Fossils Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plaster Fossil Casting Summary Nothing found Procedure * Prepare a workspace covered with newspaper. * text/html 2025-09-04T13:10:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_light_by_rubbing_quartz?rev=1756991417&do=diff Making Light by Rubbing Quartz Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Real Glowing Rocks, Triboluminescence Summary Nothing found Procedure * Collect two clean, dry pieces of clear quartz large enough to hold comfortably. Inspect for sharp edges and brush off any grit. text/html 2025-09-10T13:03:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_marshmallow_molecules?rev=1757509435&do=diff Making Marshmallow Molecules Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marshmallow Chemistry Models Summary Nothing found Procedure * Separate mini marshmallows by color, assigning each color to a different element (e.g., orange = oxygen, pink = hydrogen, yellow = carbon, green = nitrogen). text/html 2025-09-07T02:32:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_nitrogen_dioxide?rev=1757212349&do=diff Making Nitrogen Dioxide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Reaction of Copper with Nitric Acid Summary Nothing found Procedure * Place a small amount of copper metal (such as copper turnings or a short length of copper wire) into a fume hood or well-ventilated reaction vessel. text/html 2025-09-22T11:50:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_poo?rev=1758541848&do=diff Making Poo: Modeling the Digestive System Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Digestive System in Action Summary Nothing found Procedure * Place 50 ml of vinegar into a plastic sandwich bag to represent stomach acid. text/html 2025-09-29T11:42:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_rayon_fiber?rev=1759146170&do=diff Making Rayon Fiber Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Artificial Silk from Cotton Summary Nothing found Procedure * Prepare basic copper carbonate by reacting copper sulfate with baking soda, or use ready-made material. text/html 2025-09-29T22:25:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_silicon_from_sand?rev=1759184707&do=diff Making Silicon From Sand Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Elemental Silicon from Silicon Dioxide Summary Nothing found Procedure * Measure a stoichiometric mixture of finely powdered magnesium and dry silicon dioxide, using a slight excess of silicon dioxide to suppress formation of magnesium silicide. text/html 2025-09-27T12:55:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_slime?rev=1758977739&do=diff Making Slime Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Slime Summary Nothing found Procedure - In one bowl, mix about ¼ of a bottle of glue with ¼ cup of water. - Add food coloring if you want colored slime. - Stir in ¼ cup of liquid Borax solution. - Slime will begin to form immediately. Stir, then knead with your hands until it becomes less sticky. - Store in a plastic bag in the refriger… text/html 2025-09-12T13:53:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_soap?rev=1757685227&do=diff Making Soap Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Saponification and Soap Purification Summary Nothing found Procedure * Mix coconut oil and sodium hydroxide solution in a beaker. text/html 2025-10-06T05:49:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:making_yogurt?rev=1759729780&do=diff Making Yogurt Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Yogurt Fermentation Summary Nothing found Procedure * Warm 2 pints of milk in a cooking pot over low heat, stirring often, until it reaches about 88°C or just starts to bubble. text/html 2025-10-06T01:49:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:marshmallow_catapult?rev=1759715340&do=diff Marshmallow Catapult Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Potential and Kinetic Energy with a Catapult Summary Nothing found Procedure * See links below for method. text/html 2025-09-28T09:53:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:marshmallow_in_syringe?rev=1759053188&do=diff Marshmallow in Syringe Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Expanding Marshmallow, Marshmallow Pressure and Volume Summary Nothing found Procedure * (Optional) Draw a face on a miniature marshmallow with a felt-tip pen. text/html 2025-09-09T04:40:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:marshmallow_in_vacuum?rev=1757392816&do=diff Marshmallow in a Vacuum Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Effects of Pressure on Marshmallows Summary Nothing found Procedure * Place several marshmallows inside a sealed bell jar. text/html 2025-08-30T13:24:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mass_or_air?rev=1756560287&do=diff Mass of Air Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Balance Experiment, Mass of Air in Balloon Summary Nothing found Procedure * Cut a piece of string about 1–2 feet long and tie it into a loop. text/html 2026-01-22T04:58:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measure_size_of_the_sun?rev=1769057933&do=diff Measuring the Sun’s Size with a Pinhole Viewer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pinhole Viewer Sun Measurement Summary Nothing found Procedure * Cut a square about 1.5 cm by 1.5 cm from the center of the cardboard. text/html 2025-09-18T06:26:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measure_the_earth?rev=1758176781&do=diff Measure the Earth Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Eratosthenes Experiment Summary Nothing found Procedure * On a sunny day (ideally the equinox), place a straight stick vertically into flat ground. text/html 2025-09-17T01:20:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_background_radiation?rev=1758072040&do=diff Measuring Background Radiation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Geiger Counter Background Radiation Summary Nothing found Procedure * Begin with an analogy: compare radiation detection to counting drops from a water sprinkler, emphasizing that results vary but follow an average. text/html 2025-09-11T06:25:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_oxygen_use_by_germinating_seeds?rev=1757571919&do=diff Measuring Oxygen Use by Germinating Seeds Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seed Respiration with a Respirometer Summary Nothing found Procedure * Germinate seeds on moist paper towels one or two days before the lab. text/html 2025-10-06T05:44:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_parallax_distance?rev=1759729471&do=diff Measuring Parallax Distance Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Triangulation with a DIY Angle Measurer Summary Nothing found Procedure * Refer to links below for methods to measure distances using parallax. text/html 2025-09-21T23:53:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_radioactivity_with_a_geiger_counter?rev=1758498793&do=diff Measuring Radioactivity with a Geiger Counter Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Radioactivity in Common Objects Summary Nothing found Procedure * Turn on the Geiger counter with the audio enabled so that each detection event produces audible clicks. text/html 2025-09-09T02:48:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_speed_of_light_with_microwave?rev=1757386116&do=diff Measuring the Speed of Light With a Microwave Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Microwave Marshmallow Speed of Light Experiment, Finding Wavelength of a Microwave text/html 2025-09-11T09:36:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_the_gravitational_constant?rev=1757583399&do=diff Measuring the Gravitational Constant Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Cavendish Experiment Summary Nothing found Procedure * Suspend a lightweight rod horizontally using a fine torsion wire. text/html 2025-09-21T10:01:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:measuring_the_speed_of_sound_with_a_drum?rev=1758448913&do=diff Measuring the Speed of Sound with a Drum Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Drum Beat Time Lag Method Summary Nothing found Procedure * Choose an open, quiet area with clear line of sight (e.g. school oval). Assign one drummer and at least two observers with a tape or measuring wheel. text/html 2025-09-18T06:19:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:meissner_effect?rev=1758176377&do=diff Meissner Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnetic Field Expulsion, Floating Magnet Summary Nothing found Procedure * Place a sample of yttrium-barium-copper-oxide (YBCO) superconductor in a container. text/html 2025-09-10T03:03:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:melting_gallium_in_your_hand?rev=1757473383&do=diff Melting Gallium in Your Hand Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Gallium Hand-Melting Demonstration Summary Nothing found Procedure * Obtain a sample of pure gallium (coin-sized pieces work well). text/html 2025-09-13T15:04:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:melting_ice_and_rising_sea_levels?rev=1757775895&do=diff Melting Ice and Rising Sea Levels Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sea Ice vs Land Ice Experiment Summary Nothing found Procedure * Fill a clear container halfway with water. text/html 2025-09-27T13:03:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:melting_ice_on_different_surfaces?rev=1758978204&do=diff Melting Ice on Different Surfaces Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ice Melt Race: Wood vs Metal Summary Nothing found Procedure - Freeze a tray of ice cubes. - Place one ice cube on a piece of wood and another on a piece of metal. - Watch closely to see which ice cube melts faster. - Touch the dry parts of both surfaces—do they feel the same? Which one feels cooler? text/html 2025-10-14T04:17:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:melting_ice_on_warm_and_cold_plates?rev=1760415448&do=diff Melting Ice On Warm and Cold Plates Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Conduction and Ice Melting Summary Nothing found Procedure * Gather two plates or flat objects—one that feels cold to the touch (such as metal or glass) and one that feels warm (such as plastic, paper, or wood). text/html 2025-09-25T09:26:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:melting_vs_dissolving?rev=1758792386&do=diff Melting vs Dissolving Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Phase Change vs Solution Summary Nothing found Procedure * Gather materials for melting: equal masses of ice, butter, and chocolate in separate microwave-safe cups; balance; microwave; timer; stir sticks. text/html 2025-09-15T01:05:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mentos_and_diet_coke?rev=1757898310&do=diff Mentos and Diet Coke Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Erupting Diet Coke with Mentos Summary Nothing found Procedure * Prepare a Mentos cartridge by rolling an index card into a tube slightly larger than the candies and taping it closed. text/html 2025-09-02T04:39:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:metal_rod_conduction?rev=1756787946&do=diff Metal Rod Conduction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Transfer Along a Rod, Wax Melting Conduction Summary Nothing found Procedure * Attach small pieces of wax at equal intervals along the length of a metal rod. text/html 2025-08-30T02:10:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:methanol_flame_colors?rev=1756519827&do=diff Methanol Flame Colors Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rainbow Flames with Metal Salts Summary Nothing found Procedure * Clear a flame-resistant bench and place five heat-safe borosilicate Petri dishes on ceramic squares, spaced at least 8 cm apart. text/html 2025-09-14T22:15:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:microwave_hot_spots_with_marshmallows?rev=1757888118&do=diff Microwave Hot Spots With Marshmallows Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Create a Marshmallow Map of Your Microwave, Microwave Wavelength Demonstration Summary text/html 2025-09-09T02:48:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:microwaving_grapes_to_create_plasma?rev=1757386136&do=diff Microwaving Grapes to Create Plasma Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plasma from Grapes Summary Nothing found Procedure * Slice a grape nearly in half, leaving a small strip of skin to connect the halves, or place two whole grapes touching each other. text/html 2025-09-19T00:30:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:milgrams_obedience_to_authority?rev=1758241845&do=diff Milgram's Obedience to Authority Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Authority Compliance Activity Summary Nothing found Procedure * Begin reviewing a past lesson or homework assignment. text/html 2025-08-31T08:49:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:milk_of_magnesia_colors?rev=1756630172&do=diff Milk of Magnesia Changing Colors Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Neutralizing Acids with Milk of Magnesia Summary Nothing found Procedure * Pour about 100 mL of milk of magnesia into a 500 mL beaker and dilute with tap water until the beaker is half full. text/html 2025-09-18T06:00:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mitosis_in_onion_root_cells?rev=1758175236&do=diff Mitosis in Onion Root Cells Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cell Cycle Phase Identification Summary Nothing found Procedure * Access digitized microscope images of onion root tips. text/html 2025-09-21T03:20:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:model_electric_bell?rev=1758424841&do=diff Model Electric Bell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vibrating Electromagnet Summary Nothing found Procedure * Wind about twenty turns of PVC-covered copper wire around one arm of an iron C-core. text/html 2025-09-08T12:12:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modeling_dna_with_pipe_cleaners?rev=1757333578&do=diff Modeling DNA with Pipe Cleaners Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bead and Wire DNA Structure Summary Nothing found Procedure * Choose bead colors to represent each of the four DNA bases (for example: blue = adenine, green = thymine, purple = guanine, orange = cytosine). text/html 2025-08-29T22:51:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modeling_rotation_and_revolution?rev=1756507873&do=diff Modeling the Difference Between Rotation and Revolution Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Teaching Rotation and Revolution Summary Nothing found Procedure text/html 2025-10-06T05:37:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modeling_sea_level_rise_in_google_earth?rev=1759729076&do=diff Modeling Sea Level Rise in Google Earth Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: How to Drown Your Town Summary Nothing found Procedure * Choose some significant places of importance and find them on Google Earth. text/html 2025-09-21T22:50:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modeling_solar_and_lunar_eclipses?rev=1758495036&do=diff Modeling Solar and Lunar Eclipses Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sun-Earth-Moon Eclipse Demonstration Summary Nothing found Procedure * See links below for details on how to make and use the model. text/html 2025-09-22T23:08:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modeling_stem_cell_development?rev=1758582489&do=diff Modelling Stem Cell Development Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Play Dough Embryo Models Summary Nothing found Procedure * See links below for method and activities. text/html 2025-08-29T23:24:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:modelling_faults_with_layered_clay?rev=1756509881&do=diff Modelling Faults with Layered Clay Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Earthquake Fault Model Summary Nothing found Procedure * Flatten three pieces of clay, each in a different color, into rectangles. text/html 2025-09-24T04:51:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:molar_volume_of_hydrogen?rev=1758689475&do=diff Molar Volume of Hydrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magnesium and Acid Gas Collection Summary Nothing found Procedure * Cut a short length of clean magnesium ribbon. text/html 2025-09-12T03:37:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mold_growth_on_bread?rev=1757648278&do=diff Mold Growth on Bread Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fungi and Decomposition Summary Nothing found Procedure * Label two plastic bags “Wet Bread” and “Dry Bread.” text/html 2025-09-22T10:44:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mouse_dissection?rev=1758537888&do=diff Mouse Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Mammalian Anatomy Through Mouse Dissection Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-10-06T05:50:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mousetrap_muscle_contraction?rev=1759729832&do=diff Mouse Trap Muscle Contraction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: All-or-None Muscle Contraction, Muscle Response Analogy Summary Nothing found Procedure text/html 2025-09-08T05:37:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:mousetrap_nuclear_fission?rev=1757309850&do=diff Mousetrap Nuclear Fission Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mousetrap Chain Reaction Summary Nothing found Procedure * Assemble a 6 × 7 array of mousetraps on a plywood board. text/html 2025-09-23T05:54:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:muscle_fatigue?rev=1758606872&do=diff Muscle Fatigue Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Finger Marathon Summary Nothing found Procedure * Gather materials per pair: 1 spring clothes peg (same type for all pairs), stopwatch or timer, data sheet, pencil, and optional alcohol wipes for shared pegs. text/html 2025-08-29T23:29:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:music_box_on_bench?rev=1756510150&do=diff Music Box on Bench Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Music Box Sound Amplification Model Summary Nothing found Procedure * Wind or activate the music box mechanism. text/html 2025-09-21T22:33:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:musical_bottles?rev=1758494035&do=diff Musical Bottles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Blowing Bottles for Sound Summary Nothing found Procedure * Collect three narrow-neck bottles and clean them. text/html 2025-08-30T10:32:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:naked_egg_osmosis?rev=1756549977&do=diff Naked Egg Osmosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Shrinking and Swelling Eggs Summary Nothing found Procedure * Prepare a “naked egg” by soaking a raw egg in vinegar for 24–48 hours until the shell dissolves. text/html 2025-09-14T22:15:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:naked_egg?rev=1757888128&do=diff Naked Egg (Bouncy Egg) Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Egg in Vinegar Summary Nothing found Procedure * Place a raw egg in a jar and cover it completely with vinegar. text/html 2025-08-30T00:10:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:natural_selection_with_paper_airplanes?rev=1756512626&do=diff Natural Selection with Paper Airplanes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Evolution in Plane Sight Summary Nothing found Procedure * Give each participant paper and ask them to make their favorite paper airplane design. text/html 2025-10-06T05:50:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:needle_through_a_balloon?rev=1759729844&do=diff Needle Through A Balloon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pin The Balloon Summary Nothing found Procedure * Inflate a balloon until it is about three-quarters full and tie it securely. text/html 2025-09-24T02:35:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nerve_speed_relay?rev=1758681316&do=diff Nerve Speed Relay Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Nerve Transmission Test Summary Nothing found Procedure * Arrange a group of participants standing side by side in a line or sitting in chairs. text/html 2025-09-08T07:25:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:neutralization_of_acid_and_base?rev=1757316328&do=diff Neutralization of Acid and Base Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydrochloric Acid and Sodium Hydroxide Reaction Summary Nothing found Procedure * Pour a measured amount of sodium hydroxide solution into a beaker. text/html 2025-08-30T10:08:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:newton_disc?rev=1756548524&do=diff Newton Disc - Spinning Color Wheel Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: White Light Color Disc Summary Nothing found Procedure * Gather materials: cardboard, paper, scissors, ruler, glue, CD, colored pencils, toothpick, and yarn. text/html 2025-09-15T06:14:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:newtons_cradle?rev=1757916841&do=diff Newton's Cradle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Pull back one of the spheres in the cradle to a small angle and release it. text/html 2025-10-06T03:45:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nichrome_wire_kettle?rev=1759722305&do=diff Nichrome Wire Kettle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heating Water with Nichrome Wire Summary Nothing found Procedure * Wrap a length of nichrome wire around a pencil to form a tight coil, leaving about 5–6 cm of wire free at each end. text/html 2025-09-08T06:27:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nitinol_shape_memory_alloy?rev=1757312853&do=diff Nitinol Shape Memory Alloy Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Smart Wire Demonstration Summary Nothing found Procedure * Provide volunteers with two types of wires: straight ordinary wire and straight Nitinol wire. text/html 2025-09-07T02:52:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nitrogen_dioxide_dinitrogen_tetroxide_equilibrium?rev=1757213527&do=diff Nitrogen Dioxide and Dinitrogen Tetroxide Equilibrium Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Brown to Colorless Gas Equilibrium Demonstration Summary Nothing found text/html 2025-09-25T03:53:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nitrogen_triiodide?rev=1758772393&do=diff Nitrogen Triiodide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Explosive Decomposition of Nitrogen Triiodide Summary Nothing found Procedure * Dissolve iodine powder in concentrated ammonia in a beaker, stir, and let stand for 15 minutes. text/html 2025-08-30T00:41:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:non-burning_money?rev=1756514480&do=diff Non-Burning Money Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Non-Burning Dollar Bill Summary Nothing found Procedure * Prepare a non-burning solution by mixing equal parts alcohol (ethanol or isopropyl) and water in a bottle. Add 2–3 tablespoons of table salt to make the flame more visible. text/html 2025-09-15T01:49:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:nylon_rope_trick?rev=1757900959&do=diff Nylon Rope Trick Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Interfacial Polymerization of Nylon Summary Nothing found Procedure * Pour 25 mL of 5% aqueous 1,6-diaminohexane into a crystallizing dish. text/html 2025-09-17T05:14:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:observing_plant_transpiration?rev=1758086085&do=diff Observing Plant Transpiration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water Vapor from Leaves Summary Nothing found Procedure * Select a healthy, sunny outdoor plant with live leaves. text/html 2025-09-22T12:27:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:observing_yogurt_bacteria?rev=1758544044&do=diff Observing Yogurt Bacteria Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Observing Probiotic Bacteria Summary Nothing found Procedure * Place a clean glass slide on your work surface. text/html 2025-08-30T08:29:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ocean_acidification?rev=1756542556&do=diff Ocean Acidification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill two beakers with tap water. * Add several drops of a pH indicator (aquarium indicator, phenolphthalein or bromothymol blue) to each beaker. text/html 2025-09-22T11:23:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:oh_deer_population_game?rev=1758540209&do=diff Oh Deer! Population Game Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Deer and Habitat Simulation Summary Nothing found Procedure * Mark two parallel lines or areas in an open space: one side for deer, the other for habitat resources. text/html 2025-09-20T21:39:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ohms_law?rev=1758404384&do=diff Ohm's Law Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Voltage, Current, and Resistance Relationship Summary Nothing found Procedure * Gather equipment: a low-voltage DC power supply, a fixed resistor (e.g., 100 Ω), a voltmeter, an ammeter, and connecting leads. text/html 2025-09-22T11:49:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:oil_and_water_emulsification?rev=1758541766&do=diff Oil and Water Emulsification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soap as an Emulsifier Summary Nothing found Procedure * Fill a clear glass or flask with some water. text/html 2025-09-27T13:17:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:oil_slick_cleanup?rev=1758979040&do=diff Oil Slick Cleanup Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Oil and Water Pollution Activity Summary Nothing found Procedure * Fill a tin pan halfway with water. text/html 2025-09-12T00:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:oil_spill_cleanup?rev=1757636464&do=diff Oil Spill Cleanup Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simulated Marine Oil Spill Summary Nothing found Procedure * Fill a tin pan halfway with water. text/html 2025-09-24T02:29:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:olfactory_adaptation?rev=1758680981&do=diff Olfactory Adaptation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Smell Adaptation Summary Nothing found Procedure * Choose a safe and distinct-smelling item (such as an orange peel, vanilla extract, or vinegar). text/html 2025-09-09T02:53:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:onezoom_tree_of_life_explorer?rev=1757386411&do=diff OneZoom Tree of Life Explorer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Interactive Tree of Life Summary Nothing found Procedure * Open the OneZoom Tree of Life Explorer in a web browser. text/html 2025-09-18T06:06:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:onion_root_tip_mitosis?rev=1758175576&do=diff Onion Root Tip Mitosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Observing Stages of Mitosis Summary Nothing found Procedure * Grow onion bulbs in water until new root tips develop (4–6 days). text/html 2025-08-29T12:28:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:opposable_thumbs_adaptation?rev=1756470489&do=diff Opposable Thumb Adaptation - Taping Thumbs Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Adaptations Summary Nothing found Procedure * Students practice activities normally, then with their thumbs taped. text/html 2025-10-02T02:56:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:optical_activity_of_sugar?rev=1759373803&do=diff Optical Activity of Sugar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rotation of Polarized Light by Sugar Solution Summary Nothing found Procedure * Cut two square holes in each cardboard sheet, spaced evenly apart. text/html 2025-09-08T23:53:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:origami_dna_model?rev=1757375628&do=diff Origami DNA Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Paper DNA Model, Folding a DNA Double Helix Summary Nothing found Procedure * Print out the origami DNA templates (colored or blank) from the text link below. text/html 2025-09-08T07:17:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:oscillating_clock_reaction?rev=1757315871&do=diff Oscillating Clock Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Briggs-Rauscher Reaction, Color-Changing Iodine Reaction Summary Nothing found Procedure * text/html 2025-09-08T00:21:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:osmosis_and_diffusion_with_dialysis_tubing?rev=1757290888&do=diff Osmosis and Diffusion with Dialysis Tubing Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Model Cell Membrane with Starch and Glucose, Demonstrating Selective Permeability text/html 2025-09-22T10:44:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:owl_pellet_dissection?rev=1758537896&do=diff Owl Pellet Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links How to dissect an owl pellet - Scottish Wildlife Trust: text/html 2025-09-16T06:36:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pangaea_puzzle?rev=1758004561&do=diff Pangaea Puzzle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Continental Drift Puzzle, Plate Tectonic Puzzle Summary Nothing found Procedure * Introduce students to the concept of plate tectonics and the idea that continents were once connected. text/html 2025-09-12T00:26:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:panning_for_gold?rev=1757636794&do=diff Panning for Gold Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simulated Gold Rush Summary Nothing found Procedure * Fill a large container (plastic tub, pool, or sand table) with a mixture of sand, small and large pebbles, optional minerals, and magnetite until 2–4 inches deep. text/html 2025-09-17T04:59:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:paper_recycling?rev=1758085186&do=diff Paper Recycling Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Collect used paper and sort it into recyclable and non-recyclable types (avoid glossy coated paper and heavily soiled paper). text/html 2025-09-20T20:54:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pascals_principle_with_syringes?rev=1758401686&do=diff Pascal’s Principle With Syringes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hydraulic Force Demonstration Summary Nothing found Procedure * Connect two syringes of different sizes with plastic tubing filled with water, ensuring no air bubbles remain. text/html 2025-09-14T23:12:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pavlov_in_the_classroom?rev=1757891567&do=diff Pavlov in the Classroom Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Classical Conditioning Summary Nothing found Procedure * Choose a neutral cue that students do not already associate with instructions (for example, a two-note chime or a unique clap pattern). text/html 2025-09-27T14:05:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:peeling_apple_biosphere_model?rev=1758981958&do=diff Peeling Apple Biosphere Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Take a whole apple to represent Earth. * Cut the apple into quarters to illustrate that about three-quarters of the Earth is covered by water and only one-quarter is land. text/html 2025-09-25T02:44:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pen_ink_chromatography?rev=1758768245&do=diff Pen Ink Chromatography Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Paper Chromatography Summary Nothing found Procedure * Gather materials: chromatography paper strips (or white cone coffee filters cut into strips, or paper towel), small clear cup or jar, water, clips (paper clip or binder clip), pencil, ruler, scissors, several fountain pen inks or samples, optional glass dip pen or cotton swab. text/html 2025-08-31T01:21:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pencils_through_bag?rev=1756603263&do=diff Pencils Through a Bag Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a resealable plastic bag about two-thirds full of water and seal it tightly. text/html 2025-09-20T09:42:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pendulum_period_investigation?rev=1758361333&do=diff Pendulum Period Investigation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Swinging on a String Summary Nothing found Procedure * Tie a small mass (washer or metal nut) to a light string and hang it from a fixed support; measure the length from pivot to the center of the bob. text/html 2025-08-30T02:32:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pepper_and_water_surface_tension?rev=1756521139&do=diff Pepper and Water Surface Tension Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Pepper and Soap Surface Tension Summary Nothing found Procedure * Pour 1–2 cm of water into a shallow dish or plate. text/html 2025-08-28T03:19:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:peppered_moth_simulation?rev=1756351166&do=diff Peppered Moth Simulation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Peppered Moth Natural Selection Summary Nothing found Procedure Various online games simulate hunting light and dark moths on contrasting backgrounds. These model how environmental change can shift the frequency of traits in a population over generations. text/html 2025-09-22T11:47:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pepsin_digestion_of_protein?rev=1758541652&do=diff Pepsin Digestion of Protein Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Protein Hydrolysis with Pepsin Summary Nothing found Procedure * Label six test tubes: 1, 2, 3, 4, “Boiled,” and “Water.” text/html 2025-09-15T00:19:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:performing_a_titration?rev=1757895553&do=diff Performing a Titration Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Acid–Base Titration Demonstration Summary Nothing found Procedure - See instructions in the links below text/html 2025-09-10T07:02:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ph_indicator_easter_eggs?rev=1757487752&do=diff pH Indicator Easter Eggs Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Color Changing Easter Eggs Summary Nothing found Procedure * Boil red cabbage in water until the liquid turns deep purple, then strain out the cabbage. text/html 2025-09-27T11:20:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ph_paper?rev=1758972022&do=diff Universal pH Test Paper Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Universal Indicator Paper, pH of household substances Summary Nothing found Procedure * text/html 2025-09-24T06:36:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ph_rainbow_tube?rev=1758695807&do=diff pH Rainbow Tube Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Universal Indicator Color Column Summary Nothing found Procedure * Stopper one end of a long demonstration tube securely and place it upright on the table. text/html 2025-09-21T22:47:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:phases_of_the_moon?rev=1758494852&do=diff Phases of the Moon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Moon Phases Summary Nothing found Procedure * Place a lamp with a bright bulb in the center of a darkened room to represent the Sun. text/html 2025-09-22T13:29:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:phototropism_plant_light_maze?rev=1758547765&do=diff Phototropism Plant Light Maze Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Plant Light Maze Summary Nothing found Procedure *Growing the plant* * Fill a small container (7–10 cm high) with potting mix, leaving about 1 cm at the top. text/html 2025-09-17T01:07:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:phylogenetic_game?rev=1758071272&do=diff Phylogenetic game Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Evolutionary Tree Building Activity Summary Nothing found Procedure * See resources in the Links below. text/html 2025-10-06T00:37:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:picture_wall_of_the_kingdoms?rev=1759711027&do=diff Picture Wall of the Kingdoms Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Biodiversity Through Photography Summary Nothing found Procedure * Brainstorm locations where examples of the kingdoms might be found in your environment. text/html 2025-09-28T15:23:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pieces_of_the_story?rev=1759073035&do=diff Pieces of the Story Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Science as a Puzzle Summary Nothing found Procedure * Cut a book roughly in half, separating pages. text/html 2026-02-24T22:24:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pig_heart_dissection?rev=1771971882&do=diff Pig Heart Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Heart Dissection GCSE A Level Biology NEET Practical Skills - Ava Hearts Biology: text/html 2025-09-13T14:15:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pigeon_dissection?rev=1757772948&do=diff Pigeon Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Avian Anatomy: Pigeon Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-14T22:15:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pineapple_enzymes_and_geletin?rev=1757888135&do=diff Pineapple Enzymes and Geletin Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Enzymes in Action Summary Nothing found Procedure * Open a can of pineapple pieces and set aside. text/html 2025-09-27T13:42:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ping_pong_ball_lipid_bilayer?rev=1758980529&do=diff Ping Pong Ball Lipid Bilayer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fluid Mosaic Model Summary Nothing found Procedure * See the links section below for full instructions. text/html 2025-09-15T11:01:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ping_pong_funnel_blow?rev=1757934104&do=diff Ping Pong Funnel Blow Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Bernoulli Challenge Summary Nothing found Procedure * Place a ping pong ball into the wide end of a funnel. text/html 2025-09-18T06:57:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ping_pong_vacuum_cannon?rev=1758178676&do=diff Ping Pong Vacuum Cannon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Refer to links below for construction, setup, and operating instructions. text/html 2025-09-08T01:27:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pinhole_camera?rev=1757294859&do=diff Pinhole Camera Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Pinhole Viewer Summary Nothing found Procedure * Gather materials: shoebox with lid, aluminum foil, white parchment or tracing paper (or thin white plastic), scissors or craft knife, pin or needle, black tape, and black paint or dark paper. text/html 2025-09-17T04:55:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pizza_box_solar_oven?rev=1758084922&do=diff Pizza Box Solar Oven Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Solar Cooker Summary Nothing found Procedure * Cut three sides of a square flap on the lid of a pizza box, leaving about two inches from the edges. text/html 2025-08-29T12:16:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:polar_bear_blubber_adaptations?rev=1756469811&do=diff Polar Bear Blubber Adaptations Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a large bowl or container with ice and water. Add food coloring if desired. text/html 2025-09-17T00:55:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pollination_role_play?rev=1758070550&do=diff Pollination Role Play Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bee and Flower Role Play Summary Nothing found Procedure * Assign children roles as flower parts (sepals, petals, stamens, stigma) and one child as the bee. text/html 2025-09-20T03:15:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ponzo_illusion?rev=1758338104&do=diff Ponzo Illusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Converging Lines Size Illusion Summary Nothing found Procedure * Draw or project two converging lines, similar to railroad tracks meeting at a vanishing point. text/html 2025-10-10T01:27:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:popsicle_bridge?rev=1760059650&do=diff Popsicle Bridge Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Which Bridge Holds the Most Weight? Summary Nothing found Procedure * Select materials (e.g., popsicle sticks with wood glue and binder clips, or plastic straws with tape) and build at least two truss-style bridges. text/html 2025-08-30T14:57:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:potato_battery?rev=1756565847&do=diff Potato / Lemon Battery Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Energy from a Potato, Fruit battery. Summary Nothing found Procedure * Insert a copper strip and a zinc strip into a fresh potato (or lemon) about 2 cm apart and a few centimeters deep. text/html 2025-09-14T22:15:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:potato_catalase_hydrogen_peroxide_decomposition?rev=1757888143&do=diff Potato Catalase Hydrogen Peroxide Decomposition Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Testing Temperature Effects on Catalase Summary Nothing found Procedure text/html 2025-08-30T08:48:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:potato_inertia?rev=1756543699&do=diff Potato Inertia Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Knife and Potato Inertia Demo, Apple Inertia Summary Nothing found Procedure * Take a raw potato and place it securely on a stable surface. text/html 2025-08-31T22:30:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pouring_water_down_string?rev=1756679411&do=diff Pouring Water Down a String Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water String Trick, Cohesion and Adhesion Demonstration, Travelling Water Summary Nothing found text/html 2025-09-06T08:21:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:preparing_and_testing_hydrogen?rev=1757146901&do=diff Preparing and Testing Hydrogen Gas Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Laboratory Preparation of Hydrogen Summary Nothing found Procedure * Place about 2.5 g of zinc (or magnesium ribbon) into a conical flask with a side arm. text/html 2025-09-06T08:16:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:preparing_and_testing_oxygen?rev=1757146610&do=diff Preparing and Testing Oxygen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Oxygen from Hydrogen Peroxide Summary Nothing found Procedure * Place a small amount of solid manganese(IV) oxide (black powder) into a conical flask. text/html 2025-08-30T11:00:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:production_of_ammonia_gas?rev=1756551655&do=diff Production of Ammonia Gas Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Making Ammonia Summary Nothing found Procedure * Prepare a mixture of ammonium chloride and dry-slaked lime (calcium hydroxide) in a 3:1 ratio in a round-bottom flask. Some methods suggest adding a small amount of water. text/html 2025-09-07T10:49:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:production_of_ethylene?rev=1757242198&do=diff Production of Ethylene Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Catalytic Dehydration of Ethanol to Ethene, Ethanol to Ethylene Conversion Summary Nothing found text/html 2025-09-29T11:19:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:products_of_combustion?rev=1759144778&do=diff Products of Combustion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Burning Hydrocarbons: Detecting Water and Carbon Dioxide Summary Nothing found Procedure * Assemble the apparatus with a funnel, tubing, and two boiling tubes—one containing cobalt chloride paper and the other half-filled with limewater. text/html 2025-09-19T06:39:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:projectile_motion_range?rev=1758263941&do=diff Projectile Motion Range Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure Determine Muzzle Velocity (Horizontal Launch) * Clamp the PASCO mini launcher securely at table height with the barrel set to 0 degrees (horizontal). Wear safety glasses. text/html 2025-10-05T23:25:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:properties_of_covalent_ionic_metallic_substances?rev=1759706750&do=diff Properties of Covalent, Ionic and Metallic Substances Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Investigating Bond Types Through Physical Properties Summary Nothing found text/html 2025-09-22T11:56:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ptc_genetic_taste_test?rev=1758542166&do=diff PTC Genetic Taste Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bitter Taste Receptors and PTC Summary Nothing found Procedure * Provide students with PTC paper strips (or similar safe substitutes used in genetics education). text/html 2025-08-30T12:38:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:pythagoras_cup?rev=1756557533&do=diff Pythagoras Cup Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tantalus Cup, Greedy Cup Summary Nothing found Procedure Pythagoras cups are commercially available. The following shows how to build one with everyday materials. text/html 2025-09-20T21:21:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:radiometer?rev=1758403295&do=diff Radiometer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Light Energy to Motion Summary Nothing found Procedure * Place a radiometer under a bright lamp or in direct sunlight. text/html 2025-09-17T03:41:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rainfall_simulator?rev=1758080471&do=diff Rainfall Simulator Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Water Runoff and Land Use Simulation Summary Nothing found Procedure * Set up a rainfall simulator containing different land-use models (such as natural grass, bare soil, agricultural fields, and paved surfaces). text/html 2025-09-09T07:14:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ramp_collision_energy_experiment?rev=1757402098&do=diff Ramp Collision Energy Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inclined Plane Energy and Momentum Summary Nothing found Procedure * Gather materials including a yardstick, dowel rods, ball, lightweight cup, tissues, scale, and tape. text/html 2025-09-22T10:45:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rat_dissection?rev=1758537928&do=diff Rat Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Exploring Mammalian Anatomy with a Rat Model Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-19T07:38:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:reaction_time_under_fatigue?rev=1758267511&do=diff Reaction Time Under Fatigue Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tired vs Alert Reaction Test Summary Nothing found Procedure * Gather materials: stopwatch or reaction-time website, 30 cm ruler (for ruler-drop test), masking tape, clipboard/data sheets, pencil, light weights or bodyweight exercise space, optional laptop or tablets. text/html 2025-08-29T23:51:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:red_cabbage_indicator?rev=1756511491&do=diff Red Cabbage Indicator Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Blueberry Juice Incidator Summary Nothing found Procedure * Tear red cabbage leaves into small pieces and place them in a sealable plastic bag. text/html 2025-09-15T01:09:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:red_cabbage_rainbow_ph_indicator?rev=1757898560&do=diff Red Cabbage Rainbow pH Indicator Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Natural pH Indicator with Cabbage Summary Nothing found Procedure * Chop red cabbage and boil it in water until the liquid turns deep purple. text/html 2025-09-14T22:15:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:regular_and_diet_coke_cans_in_water?rev=1757888151&do=diff Sinking and Floating Soda Cans Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Regular and Diet Coke Cans in Water, Density Demonstration with Soda Summary Nothing found text/html 2025-09-14T22:15:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rock_candy?rev=1757888159&do=diff Rock Candy Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Sugar Crystal Sticks Summary Nothing found Procedure * Shape or cut wooden skewers so they fit your jars without touching the bottom; clip a clothespin to each skewer so it can hang centered. text/html 2025-09-12T00:53:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rock_testing_and_classification?rev=1757638400&do=diff Rock Testing and Classification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rock Identification Summary Nothing found Procedure * Introduce the three main rock types (igneous, sedimentary, metamorphic) and the rock cycle. text/html 2025-08-30T03:35:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rollback_can?rev=1756524925&do=diff Rollback Can Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Magic Rollback Can, Comeback Can Summary Nothing found Procedure * Remove or place the plastic lid on the can’s bottom to work on a flat surface. text/html 2025-10-10T01:03:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:roller_coaster_efficiency?rev=1760058214&do=diff Roller Coaster Efficiency Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marble Roller Coaster Summary Nothing found Procedure * Design a roller coaster track foam pipe or plastic tubing. text/html 2025-09-05T05:19:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rolling_a_soda_can_with_static?rev=1757049576&do=diff Rolling a Soda Can With Static Electricity Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Aluminium Can Static Roll Summary Nothing found Procedure * Inflate a balloon. text/html 2025-09-05T05:34:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rope_loop_electric_circuit?rev=1757050456&do=diff Rope Loop Electric Circuit Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Electricity with a Rope Summary Nothing found Procedure * Arrange students in a large circle, either in a hall or outdoors. text/html 2025-09-15T06:19:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rotating_chair_with_dumbbells?rev=1757917195&do=diff Rotating Chair with Dumbbells Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Conservation of Angular Momentum with Dumbbells Summary Nothing found Procedure * Place a sturdy chair with a ball-bearing axle on a flat surface. text/html 2025-09-28T11:07:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rubber_band_powered_car?rev=1759057671&do=diff Rubber Band Powered Car Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Elastic Energy Car Summary Nothing found Procedure * Build a car as shown in the links below. text/html 2025-09-25T09:44:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rubber_band_stretch?rev=1758793451&do=diff Rubber Band Stretch Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rubber Band Thermoelasticity Summary Nothing found Procedure * Hold a thick rubber band near your upper lip (skin under the nose is sensitive to small temperature changes) to sense its initial temperature. text/html 2025-09-22T10:40:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rubber_chicken_bones?rev=1758537610&do=diff Rubber Chicken Bones Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bone Decalcification Summary Nothing found Procedure * Rinse and dry clean chicken bones so no meat remains. text/html 2025-09-14T23:07:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rubber_hand_illusion?rev=1757891224&do=diff Rubber Hand Illusion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fake Hand Illusion Summary Nothing found Procedure * Seat a volunteer at a table with their left hand resting slightly to the side. text/html 2025-09-15T10:24:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rubens_tube?rev=1757931881&do=diff Rubens Tube Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Standing Wave Flame Tube Summary Nothing found Procedure * Place the Rubens tube securely on stands with its mounts. text/html 2025-09-28T10:25:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ruler_vibration_pitch?rev=1759055123&do=diff Ruler Vibration Pitch Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Table-Edge Ruler Oscillator Summary Nothing found Procedure * Place a flat ruler so part of it extends past the edge of a sturdy table and hold the inboard section firmly with one hand or a heavy book to clamp it. text/html 2025-09-25T07:03:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rusting_and_prevention?rev=1758783781&do=diff Rusting and Prevention Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rusty Nail Variables Test Summary Nothing found Procedure * Gather 6 clean steel nails, avoiding galvanized nails, and 6 labeled test tubes or clear cups. text/html 2026-02-10T03:38:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:rutherford_scattering_analogue?rev=1770694683&do=diff Rutherford Scattering Analogue Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ball-Bearing Scattering Analogy Summary Nothing found Procedure * Construct a raised aluminum obstacle (the pinnacle) shaped so that its cross-section represents the potential energy curve of a repulsive electrostatic interaction. Alternatively, use the base of a wine glass. text/html 2025-09-04T12:19:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:salt_crystal_garden?rev=1756988368&do=diff Salt Crystal Garden Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bluing Crystal Garde Summary Nothing found Procedure * Choose a shallow, wide container to promote evaporation and place pieces of porous base inside, such as coal, broken brick, terracotta, or sponge. text/html 2025-10-14T04:45:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:salt_water_purifier?rev=1760417105&do=diff Salt Water Purifier Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Desalination Device Summary Nothing found Procedure * Fill a large bowl with about 3 cm (1 inch) of warm water. text/html 2025-09-06T01:23:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:scale_model_solar_system?rev=1757121803&do=diff Scale Model of the Solar System Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Make a Scale Solar System Summary Nothing found Procedure * Learn about astronomical units (AU) and the distances between planets. text/html 2025-09-02T05:52:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:scattering_of_light_with_milk?rev=1756792338&do=diff Scattering of Light with Milk Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Why is the Sky Blue?, Sunset in a glass Summary Nothing found Procedure * Fill a clear glass pitcher or tall jar with water. text/html 2025-09-04T02:26:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:screw_ramp_around_rod?rev=1756952803&do=diff Screws - A Ramp Around a Rod Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Inclined Plane Wrapped Around a Cylinder Summary Nothing found Procedure * Begin with pictures of long ramps or staircases and explain how ramps reduce effort by spreading work over distance. text/html 2025-09-17T00:36:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:seafloor_spreading_model?rev=1758069372&do=diff Seafloor Spreading Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mid-Ocean Ridge and Trench Model Summary Nothing found Procedure * Construct a seafloor spreading model as shown in the links. text/html 2025-09-04T01:48:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:second_class_levers?rev=1756950530&do=diff Second Class Levers Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Wheelbarrow Lever Demonstration Summary Nothing found Procedure * Stack several books vertically to create a support base. text/html 2025-09-28T02:48:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sediment_sorting?rev=1759027683&do=diff Sediment Sorting Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Layering of Sediments Summary Nothing found Procedure * Provide each group with a lidded plastic jar, stopwatch, arrow stickers, and samples of clay, sand, silt, gravel, and plant material. text/html 2025-09-10T01:30:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sedimentary_rock_snacks?rev=1757467808&do=diff Sedimentary Rock Snacks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Edible Sedimentary Rocks Summary Nothing found Procedure * Grease an 8×8 inch baking pan. text/html 2025-09-12T04:06:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:see_convection_currents?rev=1757649965&do=diff See Convection Currents Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hot and Cold Water Convection Summary Nothing found Procedure * Fill a tall glass or jar with cold water. text/html 2025-09-28T14:03:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:see_saw_lever?rev=1759068232&do=diff See-Saw Lever Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Teeter-Totter Lever Summary Nothing found Procedure * Have two children of similar weight sit on opposite sides of a see-saw. Adjust positions until the see-saw balances. Measure and record each distance from the fulcrum. text/html 2025-09-22T13:48:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:seed_dispersal?rev=1758548922&do=diff Seed Dispersal Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: How Seeds Spread in Nature Summary Nothing found Procedure * Collect a variety of dried seeds and pods (such as dandelion, burdock, acorn, milkweed, and thistle). text/html 2025-09-04T01:44:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:seesaw_scales?rev=1756950247&do=diff Seesaw Scales Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: First Class Levers Summary Nothing found Procedure * Use sticky tape to secure a binder clip (opened out) to a desk, creating the fulcrum. text/html 2025-09-11T09:28:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:separating_white_light_into_colors?rev=1757582912&do=diff Separating White Light into Colors Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dispersion of Light with a Prism Summary Nothing found Procedure * Place a sheet of white paper on a flat surface to act as a screen. text/html 2025-09-14T23:05:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:serial_position_effect?rev=1757891154&do=diff Serial Position Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Primacy and Recency Effects Summary Nothing found Procedure * Prepare 3–5 different lists of 12–16 common, unrelated words (or simple pictures), each in a unique random order. text/html 2025-09-20T21:33:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:series_and_parallel_circuits?rev=1758403992&do=diff Series and Parallel Circuits Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Current and Voltage in Bulb Circuits Summary Nothing found Procedure * Build a simple series circuit with one bulb and a battery. Insert an ammeter in series with the loop and a voltmeter across the bulb. text/html 2025-09-09T23:04:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:shaken_soda_can_race?rev=1757459074&do=diff Shaken Soda Can Race Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soda Can Rolling Experiment Summary Nothing found Procedure * Place two identical unopened soda cans at the top of a smooth incline. text/html 2026-02-24T22:24:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:shark_dissection?rev=1771971894&do=diff Shark Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dogfish Shark Dissection (Squalus acanthias) Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-22T10:45:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sheep_brain_dissection?rev=1758537946&do=diff Sheep Brain Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links Sheep Brain Dissection - Center for Science Education - Great Diseases: text/html 2025-09-11T22:47:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:shoeprint_identification?rev=1757630856&do=diff Shoeprint Identification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Matching Shoeprints to Suspects Summary Nothing found Procedure * Prepare one culprit shoe impression sheet and three suspect shoe impression sheets. Alternatively, collect three real shoes, coat the soles with dilute paint, and press them onto paper to make prints. text/html 2025-09-20T03:32:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:shoot_the_monkey?rev=1758339135&do=diff Shoot the Monkey Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Projectile Motion Independence Summary Nothing found Procedure * Suspend a stuffed monkey (with a metal plate or shield attached) from an electromagnet. text/html 2025-09-19T00:36:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:short_term_memory?rev=1758242161&do=diff Short-Term Memory Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Test Your Memory With Word Lists Summary Nothing found Procedure * Present participants with a list of 25 unrelated words. text/html 2025-09-08T00:13:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:shrink_potato_with_osmosis?rev=1757290437&do=diff Shrink a Potato with Osmosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Potato Strips in Salt Solutions Summary Nothing found Procedure * Prepare three cups with 100 mL distilled water each and label them 0 g, 2 g, and 4 g salt; dissolve the measured salt in the latter two cups. text/html 2025-10-14T05:04:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:silo_of_salt?rev=1760418283&do=diff Silo of Salt Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Grain Pressure in a Mini Silo Summary Nothing found Procedure * Cover one end of an empty toilet paper roll with a piece of toilet paper and secure it tightly using a rubber band. text/html 2025-10-06T05:24:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:silver_nitrate_christmas_tree?rev=1759728280&do=diff Silver Nitrate Christmas Tree Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Silver Crystal Tree, Silver on Copper Crystal Growth Summary Nothing found Procedure * text/html 2025-09-10T12:30:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_accelerometer?rev=1757507417&do=diff Simple Accelerometer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Cork and Water Accelerometer Summary Nothing found Procedure * Use hot glue to attach one end of a string to a cork and the other end to the inside of the jar’s lid. The cork should hang about 2/3 of the way up the jar when the string is taut. text/html 2025-09-04T00:42:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_compound_pulleys?rev=1756946557&do=diff Simple and Compound Pulleys Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Compound Pulley Systems Summary Nothing found Procedure * Gather materials: 6 low-friction pulleys, 3 strings of different lengths, 2 table clamps, 6 right-angle clamps, 3 × 1 kg masses, 3 × 100–200 g masses, laptop, force sensor, and 850 Universal Interface (see first link). text/html 2025-09-05T11:15:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_electric_motor?rev=1757070947&do=diff Simple Electric Motor Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Homemade Electromagnet Motor Summary Nothing found Procedure * Build motor according to instructions in the links. text/html 2025-09-10T07:12:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_heat_conduction_experiment?rev=1757488372&do=diff Simple Heat Conduction Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Heat Conductors Summary Nothing found Procedure * Fill a pot with water and place it on a stove or hot plate until it reaches boiling or near boiling. text/html 2025-09-04T02:20:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_machines_in_zipper?rev=1756952413&do=diff Simple Machines in a Zipper Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Science of Zippers Summary Nothing found Procedure * Show students a zipper and use a magnifying glass to highlight the teeth. text/html 2025-09-15T01:40:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simple_pulley_system?rev=1757900440&do=diff Simple Pully System Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: DIY Pulley, Build Your Own Pulley Summary Nothing found Procedure * Cut two circles from cardboard and poke a hole in the center of each. text/html 2025-09-12T01:57:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulate_a_sneeze?rev=1757642254&do=diff Simulating a Sneeze Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Respiratory Hygiene Activity Summary Nothing found Procedure * Divide participants into small groups of 4–5 and provide each group with a “sneeze runway” (paper), a spray bottle with colored water, a ruler/tape measure, gloves, and tissues. text/html 2025-09-18T05:34:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulated_blood_typing?rev=1758173693&do=diff Simulated Blood Typing Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Synthetic Blood Typing Lab Summary Nothing found Procedure * Purchase and use a simulated blood typing kit. text/html 2025-09-12T04:25:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulating_a_tsunami?rev=1757651132&do=diff Simulating a Tsunami Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Wave Simulation Project Summary Nothing found Procedure * Assemble a Lucite tank (about 92 cm long) using aquarium glue, ensuring watertight seals. text/html 2025-09-22T06:54:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulating_an_epidemic_with_glogerm?rev=1758524098&do=diff Simulating an Epidemic with GloGerm Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tracing Patient Zero Activity Summary Nothing found Procedure * Prepare one petri dish per student containing gauze soaked with mineral oil and cornstarch. Replace cornstarch with GloGerm in one dish to designate patient zero. text/html 2025-09-08T05:20:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulating_radioactive_decay_with_dice?rev=1757308843&do=diff Simulating Radioactive Decay with Dice Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Half-Life with Dice Summary Nothing found Procedure * Begin with 100 dice, each representing a radioactive nucleus. text/html 2025-08-31T09:31:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:simulating_virus_transmission?rev=1756632672&do=diff Simulating Virus Transmission Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Viral Infection, Classroom Epidemic Demonstration Summary Nothing found Procedure * Number a set of culture tubes and pipets, one for each student. text/html 2025-09-15T10:14:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:singing_crystal_glass?rev=1757931275&do=diff Singing Crystal Glass Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Resonance of Wine Glasses Summary Nothing found Procedure * Choose one crystal wine glass and inspect it for chips or cracks. text/html 2025-09-28T09:58:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:singing_rod?rev=1759053484&do=diff Singing Rod Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Resonating Metal Rod Summary Nothing found Procedure Part 1: Resonance by Striking * Hold a metal rod at its midpoint. text/html 2025-09-20T21:04:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sinking_ice_cube?rev=1758402287&do=diff Sinking Ice Cube Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Ice and Density Summary Nothing found Procedure * Fill one beaker with ~100 mL of water and another with ~100 mL of ethyl alcohol. text/html 2025-08-29T23:56:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sinking_orange_floating_peel?rev=1756511773&do=diff Sinking Orange Floating Peel Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Natural Life Jackets Summary Nothing found Procedure * Fill two large glasses or containers with water. text/html 2025-09-16T12:52:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:slinky_seismic_waves?rev=1758027170&do=diff Slinky Seismic Waves Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Earthquake Waves with a Slinky Summary Nothing found Procedure * Use one or two slinkies and refer to the links below for generating different seismic waves. text/html 2025-09-12T04:38:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:slinky_waves?rev=1757651908&do=diff Slinky Waves Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Longitudinal and Transverse Waves with a Slinky Summary Nothing found Procedure * Stretch the slinky out across a long, smooth surface, making sure not to overstretch it. text/html 2025-08-31T09:20:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:smelly_balloons?rev=1756632024&do=diff Smelly Balloons Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Scented Balloons Diffusion Demo, Vanilla Balloon Summary Nothing found Procedure * Check for latex allergies in the class and choose alternative gloves/balloons if needed. text/html 2025-09-22T10:45:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:snake_dissection?rev=1758537954&do=diff Snake Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Internal and External Anatomy of a Snake Summary Nothing found Procedure * Follow instructions provided in the links below. text/html 2025-09-10T06:52:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:snowstorm_in_a_jar?rev=1757487176&do=diff Snowstorm in a Jar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Winter Lava Lamp Summary Nothing found Procedure * Set a clear, smooth-sided jar on a tray. In a cup, mix a few tablespoons of water with a small squirt of white acrylic paint until uniform. text/html 2025-09-28T10:09:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sock_meiosis?rev=1759054161&do=diff Sock Meiosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Cell Division with Socks Summary Nothing found Procedure * Gather 6–7 homologous pairs of socks, each pair distinct in color or pattern (e.g., two green pairs, two red pairs). Each homologous pair represents the same type of chromosome from two parents. text/html 2025-09-28T10:06:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sock_mitosis?rev=1759053967&do=diff Sock Mitosis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sock Chromosomes Summary Nothing found Procedure * Draw a large circle on a sheet of paper to represent the cell. text/html 2025-08-30T03:27:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soda_can_crusher?rev=1756524424&do=diff Soda Can Crusher Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Air Pressure Can Implosion Summary Nothing found Procedure * Rinse an empty aluminum soda can and add about 1 tablespoon of water to it. text/html 2025-09-04T12:00:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sodium_acetate_crystallization?rev=1756987253&do=diff Crystallization of Sodium Acetate Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hot Ice with Sodium Acetate Summary Nothing found Procedure * Prepare a hot water bath in a large beaker or pot and heat it on a hot plate. text/html 2025-09-25T09:35:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sodium_alginate_worms?rev=1758792954&do=diff Sodium Alginate Worms Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Goo Worms Summary Nothing found Procedure * Prepare two clear, labeled cups per participant: one with calcium chloride solution (about 2 to 3 percent in water) and one with sodium alginate solution (about 2 percent in water). Add a few drops of food coloring to the alginate if desired. text/html 2025-08-30T14:43:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sodium_in_water_explosion?rev=1756565032&do=diff Sodium in Water Explosion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a large plastic bowl three-quarters full with water. text/html 2025-08-30T14:41:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sodium_in_water?rev=1756564902&do=diff Sodium in Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure Note: this uses a tiny piece of sodium that shouldn't explode. See here for the explosive version. text/html 2025-09-11T23:07:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soil_analysis?rev=1757632061&do=diff Soil Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soil Evidence Investigation Summary Nothing found Procedure * Label soil samples from the crime scene and three suspects. text/html 2025-09-09T07:35:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soil_erosion_model?rev=1757403319&do=diff Soil Erosion Model Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rainfall and Soil Cover Experiment Summary Nothing found Procedure * Cut off one side of three identical plastic bottles. text/html 2025-09-10T02:14:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soil_field_capacity?rev=1757470455&do=diff Soil Field Capacity Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soil Water Retention Summary Nothing found Procedure * Collect several soil samples (e.g., sand, clay, loam, potting soil). text/html 2025-09-12T04:17:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soil_liquefaction_and_earthquakes?rev=1757650672&do=diff Soil Liquefaction and Earthquakes Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Shaking Soils Activity Summary Nothing found Procedure * Form a hypothesis about which soil type will resist liquefaction best. text/html 2025-10-05T23:06:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:soil_water_holding_capacity?rev=1759705575&do=diff Soil Water Holding Capacity Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soil Porosity and Water Retention Summary Nothing found Procedure * Spread a collected soil sample evenly on a baking tray to a depth of about 0.5 cm. text/html 2025-09-27T10:48:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:solar_system_mass_distribution?rev=1758970139&do=diff Solar System Mass Distribution Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Potato Model of Planetary Mass Summary Nothing found Procedure * Place 10 potatoes in a basket to represent the total mass of the solar system. text/html 2025-09-05T12:41:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:solid_lead_nitrate_and_potassium_iodide?rev=1757076064&do=diff Solid Lead Nitrate and Potassium Iodide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Making Solid Lead Iodide Summary Nothing found Procedure * Place small amounts of powdered lead nitrate and potassium iodide together in a dry container. text/html 2025-10-05T23:19:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:solubility_of_salts?rev=1759706352&do=diff Solubility of Salts Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: How Much Can Dissolve? Summary Nothing found Procedure * Label two cups for each substance: salt, sugar, baking soda, and Epsom salt. text/html 2025-10-06T03:59:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:solubility_rules?rev=1759723153&do=diff Solubility Rules Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Precipitation Reactions, Solubility Table Summary Nothing found Procedure * Prepare an 8×12 well plate or test tubes and label columns for cations (as nitrate solutions) and rows for anions (as sodium salts). text/html 2025-09-03T06:41:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sound_localization?rev=1756881663&do=diff Sound Localization Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sound from Left or Right? Summary Nothing found Procedure * Build the apparatus in advance: attach a straight, hard plastic tube to a narrow wooden block with three eyelet screws (one centered), align a ruler with the center, and connect each stethoscope earpiece to the tube ends using short lengths of flexible tubing. text/html 2025-09-21T11:03:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:speed_of_sound_with_a_resonance_tube?rev=1758452625&do=diff Speed of Sound with a Resonance Tube Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tuning Fork Resonance Tube Summary Nothing found Procedure * Set up a vertical resonance tube with its lower end submerged in a water reservoir so the air column length can be adjusted smoothly; ensure the tube can slide freely and remains upright. text/html 2025-10-06T03:32:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:spinning_convection_snake?rev=1759721559&do=diff Spinning Convection Snake Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat Rising Snake Summary Nothing found Procedure * Draw a snake in a spiral shape on a sheet of paper, or print a convection snake template. text/html 2025-09-04T02:50:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:split_flame_with_gauze?rev=1756954227&do=diff Split Flame With Gauze Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Flame Through a Gauze Split Flame with Gauze Nothing found Procedure * Place a piece of gauze securely on a ring stand or tripod. text/html 2025-09-14T23:35:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ssimple_and_choice_reaction_time_tasks?rev=1757892942&do=diff Simple and Choice Reaction Time Tasks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Reaction Time in Cognitive Psychology Summary Nothing found Procedure * Present a single stimulus (e.g., a light or cross on the screen). text/html 2025-09-05T01:40:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stacked_ball_drop?rev=1757036452&do=diff Stacked Ball Drop Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bouncing Balls Energy Transfer Summary Nothing found Procedure * Roll a clear plastic sheet into a tube about 30 cm long, slightly wider than a golf ball, and secure it with tape. text/html 2025-08-30T14:05:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stand_on_balloons_without_popping?rev=1756562714&do=diff Standing on Balloons Without Popping Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Boarding Summary Nothing found Procedure * Inflate 10–14 balloons to about 75% full (not tight). text/html 2025-08-30T09:43:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:static_electricity_balloons?rev=1756546991&do=diff Static Electricity with Balloons Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Attraction and Repulsion with Balloons Summary Nothing found Procedure * Blow up two balloons and tie them. text/html 2025-09-10T12:44:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:steel_wool_and_vinegar_exothermic_reaction?rev=1757508247&do=diff Steel Wool and Vinegar Exothermic Reaction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Rusting Heat Demonstration Summary Nothing found Procedure * Place steel wool in a beaker. text/html 2025-09-28T02:41:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sticky_rice_friction_lift?rev=1759027275&do=diff Sticky Rice Friction Lift Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Friction in Packed Rice Summary Nothing found Procedure * Fill a clean container (such as a glass jar or plastic bottle) almost to the top with uncooked long grain rice. text/html 2025-09-22T10:46:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stingray_dissection?rev=1758537962&do=diff Stingray Dissection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Follow instructions provided in the links below. Links 281 - Sting Ray Dissection - Lab Rat Academy: text/html 2025-09-09T05:51:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stirling_engine?rev=1757397079&do=diff Stirling Engine Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Low Temperature Stirling Engine Summary Nothing found Procedure * Pour hot water into a coffee cup. text/html 2025-09-07T10:57:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stoichiometry_in_combusion_of_acetylene?rev=1757242661&do=diff Stoichiometry in Combustion of Acetylene Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Acetylene Combustion and Limiting Reagents Summary Nothing found Procedure * text/html 2025-09-21T23:03:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stomp_rocket?rev=1758495809&do=diff Stomp Rocket Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Compressed Air Rockets Summary Nothing found Procedure * Cut a garden hose to about 15–30 cm in length. text/html 2025-09-28T11:12:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:straw_reed_instrument?rev=1759057949&do=diff Straw Reed Instrument Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Drinking Straw Oboe Summary Nothing found Procedure * Take a thin plastic straw. * Flatten one end and cut it into a pointed tip, like an arrowhead. This forms the vibrating reed. text/html 2025-09-27T00:18:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:straw_siphon?rev=1758932339&do=diff Straw Siphon Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Water Siphon Experiment Summary Nothing found Procedure * Fill a tall container to the brim with water and place it next to a shorter empty container. text/html 2025-09-28T11:17:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:straw_through_a_potato?rev=1759058252&do=diff Straw Through a Potato Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Straw and Potato Trick Summary Nothing found Procedure * Hold a potato in one hand. * Try to push a straw straight into it - notice the straw bends. text/html 2026-01-29T23:51:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strawberry_dna_extraction?rev=1769730691&do=diff Strawberry DNA Extraction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: See DNA with the Naked Eye Summary Nothing found Procedure * Place strawberries in a resealable plastic bag and mash them thoroughly. text/html 2025-10-10T01:16:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strength_of_paper_columns?rev=1760058964&do=diff Strength of Paper Columns Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Gather three sheets of regular typing paper and some tape. text/html 2025-08-30T12:30:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:string_telephone?rev=1756557042&do=diff String Telephone Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Talking Cups Summary Nothing found Procedure * Use a push pin to poke a small hole in the bottom of two paper cups (adult supervision recommended). text/html 2025-09-28T11:23:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strobe_light_circular_saw?rev=1759058637&do=diff Strobe Light Circular Saw Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Freezing a Spinning Saw Blade Summary Nothing found Procedure * Place a circular saw (plugged in but not cutting) in a safe demonstration area. text/html 2025-09-28T11:23:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strobe_light_fan?rev=1759058604&do=diff Strobe Light Fan Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Freezing a Spinning Fan Summary Nothing found Procedure * Place a desk fan or ceiling fan in a dimly lit room. text/html 2026-01-22T01:48:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strobe_light_guitar_strings?rev=1769046499&do=diff Strobe Light Guitar Strings Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Stroboscopic Guitar String Vibration Summary Nothing found Procedure * Set up a guitar in a darkened room so the strings are clearly visible. text/html 2026-01-22T01:48:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strobe_light_ripple_tank?rev=1769046539&do=diff Strobe Light Ripple Tank Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill the ripple tank with a shallow, even layer of water. text/html 2025-09-28T11:24:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:strobe_light_water_drops?rev=1759058654&do=diff Strobe Light Water Drops Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Freezing Falling Water Summary Nothing found Procedure * Darken the room and set up a dripping faucet so water drops fall steadily. text/html 2025-09-14T22:17:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:stroop_effect?rev=1757888253&do=diff Stroop Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Color-Word Interference Test Summary Nothing found Procedure * Prepare a list of color words (e.g., RED, BLUE, GREEN) printed in mismatched ink colors (e.g., the word text/html 2025-09-07T10:14:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sublimation_of_iodine?rev=1757240079&do=diff Sublimation of Iodine Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Solid to Vapor Transition of Iodine Summary Nothing found Procedure * Place about 2 g of iodine crystals into a 500 ml Erlenmeyer flask. text/html 2025-09-07T10:29:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sublimation_of_naphthalene?rev=1757240981&do=diff Sublimation of Naphthalene Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Purification of Solids by Sublimation Summary Nothing found Procedure * Place about 1 g of impure naphthalene mixed with sand into a 200 ml beaker. text/html 2025-09-13T02:56:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sugar_and_sulfuric_acid_carbon_snake?rev=1757732215&do=diff Sugar and Sulfuric Acid Carbon Snake Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Black Snake Experiment Summary Nothing found Procedure * Fill a small beaker about two-thirds full with sugar. text/html 2025-09-28T11:21:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sugar_cube_rock_cycle?rev=1759058484&do=diff Sugar Cube Rock Cycle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Place sugar cubes beside loose sugar to compare sediments vs compacted sedimentary rock. text/html 2025-10-02T03:28:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:superabsorbent_polymers_in_diapers?rev=1759375696&do=diff Superabsorbent Polymers in Diapers Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Diaper Dissection, Nappy Dissection Summary Nothing found Procedure * Begin with a group demonstration: place a diaper in a shallow tray and pour water into it a quarter cup at a time. text/html 2025-08-31T08:33:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:surface_area_alka_seltzer?rev=1756629188&do=diff Alka Seltzer Surface Area Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Alka Seltzer Rate of Reaction Summary Nothing found Procedure * Gather materials: three Alka-Seltzer tablets, timer, paper, heavy object (for crushing), beaker or cup, and tap water. text/html 2025-09-19T06:43:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:surface_friction?rev=1758264231&do=diff Surface Friction Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Friction Lab With Spring Scale Summary Nothing found Procedure * Set two tape marks 40 cm apart on the table to define the pulling distance. text/html 2025-08-30T02:40:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:surface_tension_boat?rev=1756521641&do=diff Surface Tension Boat Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Soap-Powered Model Boa Summary Nothing found Procedure * Cut a small boat (~5 cm long) from a foam tray or non-corrugated cardboard with a narrow notch at the back. text/html 2025-09-14T22:16:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sweet_cracker?rev=1757888166&do=diff Sweet Cracker Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: The Science of Spit, Amylase in Action Summary Nothing found Procedure * Take a plain saltine cracker (or a piece of bread) and rub off any salt. text/html 2025-10-13T22:53:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:sympathetic_resonance_tuning_forks?rev=1760396030&do=diff Sympathetic Resonance with Tuning Forks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Place two tuning forks of the same pitch on a table, with one mounted on a wooden resonance box. text/html 2025-09-03T06:30:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:taste_and_smell_connection?rev=1756881048&do=diff Taste and Smell Connection Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Flavor Perception Experiment Summary Nothing found Procedure * Partner with a friend for the activity. text/html 2025-09-17T01:24:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:teaching_hand_washing_with_uv_light?rev=1758072273&do=diff Teaching Hand Washing with UV Light Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Glow Germ Hand Hygiene Demonstration Summary Nothing found Procedure * Provide each participant with a small amount of hand wash training lotion (such as GlitterBug, GermJuice, or GloGerm). text/html 2025-09-25T23:01:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:temperature_and_solubility_of_salt_vs_sugar?rev=1758841297&do=diff Temperature and Solubility of Salt vs. Sugar Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hot vs. Cold Water Dissolving Demonstration Summary Nothing found Procedure text/html 2025-10-06T05:10:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:termite_guts?rev=1759727459&do=diff Termite Guts Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Termite Dissection Summary Nothing found Procedure * Obtain a few worker termites from a colony or commercial source. text/html 2025-09-18T22:54:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tesla_coil_wireless_lighting?rev=1758236080&do=diff Tesla Coil Wireless Lighting Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fluorescent Tube Lighting with Tesla Coil Summary Nothing found Procedure * Set up the Tesla coil securely on an insulated surface. text/html 2025-09-25T10:31:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:test_for_hard_water?rev=1758796262&do=diff Test for Hard Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Add 100 mL of a water sample to a clean test tube; mark the water line (for reference). text/html 2025-09-11T05:43:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:test_for_starch_in_leaves?rev=1757569416&do=diff Test for Starch in Leaves Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Photosynthesis Starch Indicator Test Summary Nothing found Procedure * Place one healthy potted plant in a dark place for about 24 hours to remove stored starch; keep a second, similar plant in bright light. text/html 2025-09-16T11:32:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_foods_for_reducing_sugars?rev=1758022371&do=diff Testing Foods for Reducing Sugars Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Glucose Test with Benedict’s Solution Summary Nothing found Procedure * Place the food sample in a test tube. text/html 2025-09-16T11:28:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_for_starch_in_food?rev=1758022115&do=diff Testing for Starch in Food Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Iodine Starch Test Summary Nothing found Procedure * Place small samples of different foods on a paper plate or paper towel. text/html 2025-10-02T04:49:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_insulation_materials?rev=1759380548&do=diff Testing Insulation Materials Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Stop Heat from Escaping Summary Nothing found Procedure * Wrap a plastic water bottle with one of the test materials: newspaper, a wool sock, aluminum foil, or plastic. text/html 2025-10-10T01:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_material_properties?rev=1760060134&do=diff Testing Material Properties Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Comparing Paper, Plastic, and Foil Summary Nothing found Procedure * Prepare equal-size squares of plastic, paper, and aluminum foil for each group; provide extra felt or fabric for teacher demonstrations. text/html 2025-09-15T01:43:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_ph_indicators?rev=1757900639&do=diff Testing pH Indicators Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Prepare a series of solutions with different pH values, ranging from strongly acidic to strongly basic. text/html 2025-09-12T00:45:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:testing_rock_hardness?rev=1757637930&do=diff Testing Rock Hardness Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Scratch Test: Rock Hardness Summary Nothing found Procedure * Begin by reviewing how rocks can be classified by observable features. text/html 2025-09-18T23:27:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_bystander_effect?rev=1758238031&do=diff The Bystander Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Helping Behavior Field Study Summary Nothing found Procedure * Divide the class into pairs and provide each pair with a standardized data-collection form. text/html 2025-09-13T14:30:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_daniell_cell?rev=1757773838&do=diff The Daniell Cell Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Copper-Zinc Electrochemical Cell Summary Nothing found Procedure * Fill one beaker with 1M copper sulfate solution and place a copper strip into it as the copper electrode. text/html 2025-09-17T03:35:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_jar_test_soil_texture_analysis?rev=1758080112&do=diff The Jar Test: Soil Texture Analysis Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Simple Soil Composition Analysis Summary Nothing found Procedure * Collect soil samples from about 6 inches below the surface, removing rocks, roots, and debris. text/html 2025-09-18T21:40:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_mcgurk_effect?rev=1758231656&do=diff The McGurk Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Do You Hear What You See? Summary Nothing found Procedure * Record a person repeating a simple word, such as “pie,” ensuring both audio and video are clear. text/html 2025-09-19T00:59:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_spacing_effect?rev=1758243546&do=diff The Spacing Effect Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Distributed vs Massed Practice, Distributed Study Benefits Summary Nothing found Procedure * Prepare a list with two occurrences of each target word; arrange half as massed pairs and half as distributed with several intervening items. Include a few buffer words at the beginning to minimize primacy effects. text/html 2025-09-09T05:47:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_spinning_can?rev=1757396831&do=diff The Spinning Can Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton’s Laws Water Can Demo Summary Nothing found Procedure * Take an empty soda can with its pull-tab intact (or a soup can). text/html 2025-08-30T00:26:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:the_tablecloth_trick?rev=1756513585&do=diff The Tablecloth Trick Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Newton’s First Law Tablecloth Demonstration, Inertia Tablecloth Pull Summary Nothing found Procedure text/html 2025-09-07T10:24:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermal_decomposition_of_ammonium_chloride?rev=1757240676&do=diff Thermal Decomposition of Ammonium Chloride Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sublimation of Ammonium Chloride Summary Nothing found Procedure * Place a small amount of solid ammonium chloride in a china dish. text/html 2025-10-06T05:31:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermal_decomposition_of_copper_carbonate?rev=1759728668&do=diff Thermal Decomposition of Copper Carbonate Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heating Copper Carbonate Summary Nothing found Procedure * Place a small amount of copper carbonate powder in a clean, dry test tube. text/html 2026-01-28T22:19:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermal_processing_of_bobby_pins?rev=1769638799&do=diff Thermal Processing of Bobby Pins Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Annealing and Quenching Steel Bobby Pins, Heat Treatment of Steel Summary Nothing found text/html 2025-10-06T05:51:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermite_spheres?rev=1759729881&do=diff Thermite Spheres Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Safe Thermite Reaction, Microscale Thermite Reaction Summary Nothing found Procedure * Obtain two rusty iron spheres. text/html 2025-09-15T01:22:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermite?rev=1757899379&do=diff Thermite Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Aluminum-Iron Thermite Reaction Summary Nothing found Procedure * Fill a metal bucket halfway with sand and create a small depression in the center to capture molten iron. text/html 2025-09-25T05:39:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:thermochromic_materials?rev=1758778792&do=diff Thermochromic Materials Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Heat-Sensitive Color Change, Temperature-Activated Pigments Summary Nothing found Procedure * text/html 2025-09-15T00:01:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:three_energy_systems_in_the_body?rev=1757894487&do=diff Three Energy Systems in the Body Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: ATP-PC, Glycolytic, and Oxidative Systems Summary Nothing found Procedure * Divide the class into small groups and assign each group a physical activity type (e.g., sprinting, endurance running, weightlifting). text/html 2025-09-21T03:40:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:three_polarizing_filters?rev=1758426035&do=diff Three Polarizing Filters Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Crossed Polarizers with 45° Insert Summary Nothing found Procedure * Gather two identical linear polarizing sheets (A and B), a third sheet (C), a bright, diffuse light source or projector, and a sheet of white paper as a screen. text/html 2025-10-06T01:13:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:ticker_timer_car_on_ramp?rev=1759713209&do=diff Ticker Timer Car On Ramp Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: ALT_TITLE Summary Nothing found Procedure * Part 1: Car on a Horizontal Plane * Set up a ticker timer with tape connected to a toy car. text/html 2025-09-13T02:34:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tollens_test_silver_mirror?rev=1757730858&do=diff Tollen's Test Silver Mirror Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Identification of Aldehydes Summary Nothing found Procedure * Add 5 mL of 10% silver nitrate solution to a clean flask. text/html 2025-09-18T05:48:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tool_mark_identification?rev=1758174500&do=diff Tool Mark Identification Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Forensic Tool Mark Comparison Summary Nothing found Procedure * Gather four tools, including two pairs of similar tools with slight differences (e.g., screwdrivers of different sizes). text/html 2025-09-05T05:10:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:toppling_bottles?rev=1757049024&do=diff Toppling Bottles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Center of Gravity Demonstration Summary Nothing found Procedure * Add food coloring to water so the mass distribution is more visible. text/html 2025-09-16T06:49:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tornado_in_a_bottle?rev=1758005371&do=diff Tornado in a Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Clean two large clear plastic bottles (2-liter bottles work best) and remove the labels. text/html 2025-08-30T11:42:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:total_internal_reflection_in_water_stream?rev=1756554156&do=diff Total Internal Reflection in a Water Stream Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bucket of Light, Laser in Water Stream Summary Nothing found Procedure * text/html 2025-09-16T12:46:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tragedy_of_the_commons_fishing_simulation?rev=1758026785&do=diff Tragedy of the Commons Fishing Simulation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Shared Resources Depletion Activity Summary Nothing found Procedure * Divide students into groups of 3–4 and give each group a plate with a set number of colored marshmallows (fish). text/html 2025-09-10T02:26:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:traveling_flame?rev=1757471162&do=diff Travelling Flame Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Relighting a Candle with Smoke, Candle Smoke Ignition Summary Nothing found Procedure * Place a candle on a fire-safe surface. text/html 2025-10-02T04:54:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:triple_point_of_water?rev=1759380843&do=diff Triple Point of Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Coexistence of Solid, Liquid, and Gas in Water Summary Nothing found Procedure * Cool water with ice and pour into a watch glass until half full. text/html 2025-09-20T20:13:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tug_of_war_vector_addition?rev=1758399202&do=diff Tug-of-War Vector Addition Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Tie a rope to a central ring or mark a central point on the ground. text/html 2025-09-28T14:54:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tuning_fork_and_ping_pong_ball?rev=1759071273&do=diff Tuning Fork and Ping Pong Ball Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Seeing Sound Vibrations with a Ping Pong Ball Summary Nothing found Procedure * Attach a ping pong ball to a piece of string. text/html 2025-08-29T23:35:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tuning_fork_in_water?rev=1756510554&do=diff Tuning Fork in Water Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Strike a tuning fork gently against a rubber pad or soft surface to set it vibrating. text/html 2025-08-29T23:41:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tuning_fork_on_bench?rev=1756510917&do=diff Tuning Fork on Bench Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Tuning Fork Resonance, Amplifying Sound with a Surface Summary Nothing found Procedure * Strike a tuning fork gently against a rubber stopper or soft surface to make it vibrate. text/html 2025-09-28T14:50:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tuning_fork_resonance_with_ping_pong_ball?rev=1759071050&do=diff Tuning Fork Resonance with Ping Pong Ball Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sound Energy Transfer Summary Nothing found Procedure * Place two tuning forks of the same frequency close to each other but not touching. text/html 2025-08-31T09:49:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:tuning_forks_beats?rev=1756633796&do=diff Tuning Forks Beats Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sound Beats Summary Nothing found Procedure * Set up two sound sources (e.g., tuning forks, signal generators, or musical instruments) that produce tones with close but not identical frequencies. text/html 2025-09-30T10:41:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:turning_copper_coins_silver_and_gold?rev=1759228897&do=diff Turning Copper Coins Silver and Gold Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * See links below for full method. Links Turn Pennies Silver and Gold (Chemistry Trick) - NurdRage: text/html 2025-09-27T13:24:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:turntable_paradox?rev=1758979489&do=diff Turntable Paradox Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Billiard Ball Turntable Paradox Summary Nothing found Procedure * Place a rotating turntable on a stable base with its axis vertical. text/html 2025-09-28T15:12:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:two_balloons_experiment?rev=1759072371&do=diff Two Balloons Experiment Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Air Pressure Demonstration Summary Nothing found Procedure * Inflate two balloons to different sizes. text/html 2025-08-29T09:05:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:two_falling_coins?rev=1756458331&do=diff Two Falling Coins - Projectile Motion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Projectile Motion Summary Nothing found Procedure * Place a ruler so that it extends over the edge of a table. text/html 2025-09-03T21:10:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:two_point_discrimination?rev=1756933813&do=diff Two Point Discrimination Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Touch Receptor Sensitivity Test, Skin Sensory Receptor Mapping Summary Nothing found Procedure text/html 2025-09-27T00:02:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:uncrushable_egg?rev=1758931340&do=diff Uncrushable Egg Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Impossible Egg Crush Summary Nothing found Procedure * Place a raw egg in the palm of your hand. * text/html 2025-08-31T09:04:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:upside_down_water_glass?rev=1756631089&do=diff Upside Down Water Glass Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Air Pressure Water Trick, Defying Gravity Summary Nothing found Procedure * Fill a drinking glass completely to the brim with water. (If the glass is not full, the experiment won’t work.) text/html 2025-09-13T13:30:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:use_of_laboratory_balances?rev=1757770225&do=diff Use of Laboratory Balances Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Techniques for Accurate Weighing Summary Nothing found Procedure * Determine the level of accuracy needed and select the appropriate balance (analytical for high precision, top-loading for general use). text/html 2025-09-13T14:10:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:use_of_volumetric_pipette?rev=1757772651&do=diff Use of Volumetric Pipette Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Techniques for Accurate Liquid Transfer Summary Nothing found Procedure * Refer to links for correct use of the volumetric pipette. text/html 2025-09-15T00:07:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:using_a_burette?rev=1757894859&do=diff Using a Burette Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Burette Technique for Liquid Measurement Summary Nothing found Procedure * Rinse the burette 2–3 times with the liquid you intend to use, rotating it to coat all interior surfaces; drain through the stopcock into waste. text/html 2025-09-13T15:16:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:using_a_measuring_cylinder?rev=1757776605&do=diff Using a Measuring Cylinder Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Measuring Liquids Accurately Summary Nothing found Procedure * Place the measuring cylinder on a flat, stable surface. text/html 2025-09-18T05:53:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:using_a_microscope?rev=1758174786&do=diff Using a Microscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Microscope Skills Lab Summary Nothing found Procedure * Review microscope safety rules, including how to carry, focus, and adjust light on the microscope. text/html 2025-10-02T04:59:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:using_a_separating_funnel?rev=1759381199&do=diff Using a Separating Funnel Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Liquid–Liquid Extraction Summary Nothing found Procedure * Clamp the separatory funnel securely by the neck; ensure the stopcock is closed and place a labeled receiving flask beneath the stem. text/html 2025-09-15T00:13:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:using_volumetric_flasks?rev=1757895211&do=diff Using Volumetric Flasks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Preparing Dilutions with Volumetric Flasks Summary Nothing found Procedure * Calculate the required volume of stock solution needed. text/html 2025-10-02T03:36:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:uv_beads_and_sunscreen_test?rev=1759376218&do=diff UV Beads and Sunscreen Test Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: UV Paper and Sunscreen Summary Nothing found Procedure * Prepare UV-sensitive paper or beads, dividing them into separate transparent bags or sheet protectors. text/html 2025-08-31T09:10:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:vacuum_power?rev=1756631412&do=diff Vacuum Power Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Vacuum Suction Board, Air Pressure Lifting Demonstration Summary Nothing found Procedure * Measure the diameter of your vacuum’s tube attachment. text/html 2025-09-22T00:34:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_and_soap_bubbles?rev=1758501274&do=diff Van de Graaff and Soap Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Charged Bubbles Demonstration Summary Nothing found Procedure * Set up a Van de Graaff generator in a space where bubbles can drift freely. text/html 2025-09-03T05:39:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_candle?rev=1756877952&do=diff Van de Graaff Candle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrical Wind Summary Nothing found Procedure - Set up the Van de Graaff generator with a discharge rod nearby. text/html 2025-09-03T05:39:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_confetti?rev=1756877962&do=diff Van de Graaff Confetti Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Dancing Confetti, Electrostatic Confetti Fountain Summary Nothing found Procedure * Place the Van de Graaff generator in an open area where loose confetti can safely scatter. text/html 2025-09-15T01:40:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_fluorescent_bulb?rev=1757900424&do=diff Van de Graaff with Fluorescent Bulb Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Discharge and Fluorescent Light Summary Nothing found Procedure * Turn on the Van de Graaff generator and allow charge to accumulate on the dome. text/html 2025-09-03T05:39:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_flying_ball_silver_snake?rev=1756877978&do=diff Van de Graaff Flying Ball and Silver Snake Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Floating Ball, Dancing Silver Snake Summary Nothing found Procedure text/html 2025-09-03T05:39:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_hair_raising?rev=1756877987&do=diff Van de Graaff Hair Raising Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Hair Demonstration Summary Nothing found Procedure * Place the Van de Graaff generator in an open area of the room. text/html 2025-09-03T05:39:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_human_chain?rev=1756877995&do=diff Van de Graaff Human Chain Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Passing the Charge Summary Nothing found Procedure * Place the Van de Graaff generator in an open area with space for several volunteers. text/html 2025-09-22T00:39:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_levitating_foil?rev=1758501563&do=diff Van de Graaff Levitating Foil Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Electrostatic Spinning Strips Summary Nothing found Procedure * Cut strips of aluminum foil about 50 mm long, 2.5 mm wide, and 0.02 mm thick. text/html 2025-08-31T10:00:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_making_sparks?rev=1756634424&do=diff Van de Graaff Sparks Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mini Lightning with a Van de Graaff Summary Nothing found Procedure * Set up the Van de Graaff generator and grounding rod as shown in the demonstration setup. text/html 2025-09-03T05:40:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:van_de_graaff_pie_tins?rev=1756878011&do=diff Van de Graaff Pie Tins Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Floating Pie Plates, Van de Graaff Coulomb Repulsion Summary Nothing found Procedure * Place the Van de Graaff generator in an open space with enough room above for the plates to fly off. text/html 2025-09-08T07:31:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:vanadium_oxidation_states?rev=1757316697&do=diff Vanadium Oxidation States Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Colors of Vanadium Summary Nothing found Procedure * Prepare sodium vanadate by heating vanadium pentoxide and sodium carbonate in water until the solution turns green. text/html 2025-09-22T03:12:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:viewing_onion_cells?rev=1758510728&do=diff Viewing Onion Cells Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Observing Onion Cells Under Microscope Summary Nothing found Procedure * Cut an onion in half and carefully peel away a very thin, transparent layer of epidermis. text/html 2025-09-05T11:28:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:virtual_oscilloscope?rev=1757071738&do=diff Virtual Oscilloscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Online Oscilloscope Summary Nothing found Procedure * Use an online oscilloscope or download an app. text/html 2025-08-31T09:36:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:viscosity_with_marbles?rev=1756633001&do=diff Viscosity With Marbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Marble Drop Viscosity Race Summary Nothing found Procedure * Gather several clear glasses or jars and fill each with the same volume of different liquids (e.g., water, oil, syrup, honey). text/html 2025-09-19T06:32:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:visual_and_auditory_reaction_time?rev=1758263521&do=diff Visual and Auditory Reaction Time Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure Visual Reaction Time * Pair up with a partner, one as test giver and the other as test taker. text/html 2025-09-21T22:38:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:visualizing_sound_waves_with_an_oscilloscope?rev=1758494280&do=diff Visualizing Sound Waves with an Oscilloscope Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Sound Wave Patterns Summary Nothing found Procedure * Connect a signal generator to both a speaker and an oscilloscope. text/html 2025-09-05T13:25:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:visualizing_the_mole?rev=1757078700&do=diff Visualizing the Mole Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Visualizing Avogadro’s Number Summary Nothing found Procedure * Choose a variety of elements and compounds with different molar masses (e.g., hydrogen gas in a balloon, oxygen gas in a cylinder, water, sodium chloride, carbon, copper). text/html 2025-08-31T03:23:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:vortex_rings_liquid_nitrogen?rev=1756610632&do=diff Vortex Rings Using Liquid Nitrogen Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Fog Ring Blaster Summary Nothing found Procedure * Cut a round hole in the bottom of a plastic garbage bin or in the side of a large cardboard box. The hole should be about one-third the diameter of the base. text/html 2025-09-18T06:10:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:wafting_demonstration_with_ammonia?rev=1758175855&do=diff Wafting Demonstration with Ammonia Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Safe Smelling in the Laboratory Summary Nothing found Procedure * Soak a piece of filter paper in phenolphthalein solution and allow it to dry in a fume hood overnight. text/html 2025-09-10T04:57:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:watching_yeast_make_bubbles?rev=1757480240&do=diff Watching Yeast Make Bubbles Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Observing Yeast Fermentation Summary Nothing found Procedure * Place a packet of active dry yeast into a bowl. text/html 2025-09-27T00:16:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_bottle_hole_prank?rev=1758932186&do=diff Water Bottle Hole Prank Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Leaky Bottle Air Pressure Trick Summary Nothing found Procedure * Take an empty plastic bottle with a screw-on lid. text/html 2025-09-20T20:34:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_bottle_pressure_demo?rev=1758400470&do=diff Water Bottle Pressure Demo Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Three Holed Water Bottle Summary Nothing found Procedure * Use scissors or a drill to make three small, evenly spaced holes vertically along the side of a plastic bottle. text/html 2025-09-16T06:45:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_cycle_in_a_bag?rev=1758005110&do=diff Water Cycle in a Bag Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mini Water Cycle Summary Nothing found Procedure * Gather materials: a clear plastic zip-lock bag, permanent marker, water, blue food coloring, and clear tape. text/html 2025-09-16T12:13:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_into_wine?rev=1758024801&do=diff Water Into Wine Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: pH Indicator Color Change Summary Nothing found Procedure * Place a small amount of sodium carbonate in the bottom of one glass. text/html 2025-08-31T22:52:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_on_coin?rev=1756680724&do=diff Water on a Coin Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Drops on a Penny Summary Nothing found Procedure * Place a clean coin on a flat surface. * Use an eyedropper to carefully place drops of water on the coin, one at a time, while counting. text/html 2025-09-10T12:05:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_salinity_and_density?rev=1757505950&do=diff Water Salinity and Density Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Salt Water and Fresh Water Layers, Halocline Summary Nothing found Procedure * Fill a jar with fresh water and place an egg inside. Observe how it sinks. text/html 2025-09-16T12:20:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:water_to_wine_to_milk_to_beer?rev=1758025258&do=diff Water to Wine to Milk to Beer Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Fill a “water” glass with distilled water and add sodium bicarbonate solution. text/html 2025-09-04T02:16:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:wedges?rev=1756952196&do=diff Wedges Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Hammering a Nail, The Axe, Dragging Blocks Through Rice Summary Nothing found Procedure The following wedge activities are demonstrated: text/html 2025-09-13T13:25:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:wet_mount_microscope_slide?rev=1757769905&do=diff Wet Mount Microscope Slide Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mounting Living Specimens on Slides Summary Nothing found Procedure * Place a clean glass slide on a flat surface. text/html 2025-08-29T08:57:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:whoosh_bottle?rev=1756457824&do=diff Whoosh Bottle Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Inspect a 5-gallon plastic jug for cracks, frosting, or damage and replace if flawed. text/html 2025-09-17T03:30:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:wind_erosion?rev=1758079847&do=diff Wind Erosion Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Modeling Wind Erosion Summary Nothing found Procedure * Put on safety goggles before beginning the activity. text/html 2025-09-22T12:44:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:winogradsky_column?rev=1758545060&do=diff Winogradsky Column Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Mud in a Jar: Microbial Ecosystems Summary Nothing found Procedure * Collect mud and water from a pond, river, or other natural source using a bucket or container. text/html 2025-09-21T08:18:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:wireless_audio_transfer_using_laser_light?rev=1758442728&do=diff Wireless Audio Transfer Using Laser Light Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Laser Voice Link (LiFi Demo) Summary Nothing found Procedure * Refer to the links below for complete build steps, wiring diagrams, and setup guidance. text/html 2025-10-06T05:46:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:witches_cauldron_with_dry_ice_fog?rev=1759729610&do=diff Witches Cauldron with Dry Ice Fog Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Halloween Dry Ice Fog Summary Nothing found Procedure * Choose a cauldron-style container that can safely hold hot water. text/html 2025-09-30T10:27:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:writing_with_fire?rev=1759228032&do=diff Writing With Fire Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Dissolve sodium nitrate in a small volume of distilled water, stirring until fully dissolved. text/html 2025-09-10T01:58:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:yeast_and_bread_fermentation?rev=1757469535&do=diff Yeast and Bread Fermentation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Bread in a Bag: Yeast and Dough Rising Summary Nothing found Procedure * Prepare bread dough ingredients in a sealed plastic bag and knead until combined. text/html 2025-10-09T21:17:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:yeast_fermentation_and_temperature?rev=1760044673&do=diff Yeast Fermentation and Temperature Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Summary Nothing found Procedure * Prepare four boiling tubes or similar containers and label them for different temperature conditions. text/html 2025-09-10T01:50:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.sciencedemos.net/demonstrations:yeast_fermentation?rev=1757469047&do=diff Yeast Fermentation Materials: Nothing found Difficulty: Nothing found Safety: Nothing found Categories: Nothing found Alternative titles: Balloon Fermentation Summary Nothing found Procedure * Dissolve a packet of active dry yeast in warm water as directed on the package.