Chemistry Demonstrations
by Clint Stephens
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Description
Demonstration, the procedural steps with safety tips, a still-clip from the movie, a biographical sketch of a famous scientist associated (or not) with the demonstration, a listing of famous events of the scientist's year, and some questions and answers based on the demonstration.
| Name | Description | Released | Price | ||
|---|---|---|---|---|---|
| 1 | VideoOl' Foamy: peroxide & soap decomposition | Safety Tips: Always wear goggles and a apron when doing this experiment. Be careful not to let hydrogen peroxide and sodium iodide touch you skin. | 7/8/08 | Free | View In iTunes |
| 2 | VideoPsycho Sphere of Sizzlin' Sodium | Introduction For our experiment, we are using sodium metal, phenolphthalein, and distilled water. Sodium is extremely reactive to water, and to be able to see the chemical reaction taking place, we use an indicator, phenolphthalein, to help us see the changes that occur. The materials we are using include: sodium metal, phenolphthalein, distilled water, goggles, apron,tweezers, scalpel, and a petri dish. Safety Precautions 1. Wear an apron and goggles. Do not perform this experiment unless you are a chemist or have a supervisor. | 7/8/08 | Free | View In iTunes |
| 3 | VideoHydrogen Gas and Magnesium Sulfide | Materials: lab coat goggles matches gloves scissors large test tube test tube holder glass stirring rod 1 mL beaker 2- three inch magnesium strips 30 mL sulfuric acid water | 6/27/08 | Free | View In iTunes |
| 4 | VideoRe-Light | Make a wood split spontaniously combust using Hydrogen peroxide, yeast, a wood splint, matches, and 2 beakers. To try this yourself, simply follow the steps listed below... Steps Step1 Measure 40ml of Hydrogen Peroxide. Step2 Pour in one packet of yeast. Step 3 Mix the two together. Step 4 light a wood splint and then blow it out. Step 5 Hold the burnt end of the wood splint into the bubbles and watch it light back up. | 6/27/08 | Free | View In iTunes |
| 5 | VideoSmoke Bomb | Sugar is not flammable at low temperatures, but can burn with the help of a element that is flammable. | 6/27/08 | Free | View In iTunes |
| 6 | VideoYellow Bubbles | Materials Needed - 7ml of Ivory Dish Soap 20ml of Hydrogen Peroxide (30% Solution) 20ml of Sodium Iodide (NaI) 1 large Glass Container 1 large Cakepan 1 Graduated Cylinder 1 100ml Beaker | 6/27/08 | Free | View In iTunes |
| 7 | VideoFlame Test | MATERIALS: Barium Carbonate Silver Nitrate Cupric Sulfate Iron Filings Lead Mercuric Chloride Strontium Bromide Lithium Carbonate 2 200ml beakers filled w/ water matches bunson burner eight wood splints cake pan goggles, apron, latex gloves PROCEDURE: First put a small amount of each chemical into a test tube. Then light the bunson burner. After that dip a wooden splint in water and put one of the eight chemicls listed above into the the flame. Continue this procedure until you have placed all eight chemicals in the flame. | 6/27/08 | Free | View In iTunes |
| 8 | VideoDestroying Currency | Materials 2 pennies, 1 pre 1984, 1 post 1984 hydrochloric acid 2 250 ml beakers apron goggles tin snips tongs Our chemistry experiment will determine which pennies will be more reactive with hydrochloric acid. Procedure Put on safety apparel. Cut both pennies in half, and put a penny in each beaker with the hydrochloric acid. Leave the pennies in the beakers for at least 2 hours. After the time is up use the tongs to retrieve the pennies out of the beakers and compare the cores. Conclusion The zinc core of the post 1984 penny was eaten by the hydrochloric acid. The pre 1984 penny just got cleaner. | 6/27/08 | Free | View In iTunes |
| 9 | VideoMake Some Yellow Stuff | Materials: 1) 2- 200 ml beakers 5) 36 grams of potassium iodide 2) lab apron 6) 52 grams of lead nitrate 3) goggles 7) 2- 500 ml flasks 4) distilled water 8) 1- 500 ml beaker Procedures: A) Pour into a 500 ml flask, 52 grams of lead nitrate into 380 ml of distilled water. B) Pour into a 500 ml flask, 36 grams of potassium iodide into 430 ml of distilled water. C) Shake both well until the particles are dissolved. D) Pour 100 ml of lead nitrate into a 200 ml beaker. E) Pour 100 ml of potassium iodide into a separate 200 ml beaker. F) Using the 500 ml beaker, mix them together which will produce a yellow substance. Balanced Equation PbNO3 + KI= KNO3 + PbI Double Displacement Reaction | 6/27/08 | Free | View In iTunes |
| 10 | VideoThe Little Cup Who Could | Materials: *1 paper cup 2/3 full of water *Matches *Lab Apron *Goggles *Bunson Burner *Lab Stand with Ring Clamp Procedure: Step 1 - Light and adjust bunson burner. Step 2 - Place paper cup with water in ring clamp over bunson burner. Safety Precautions *Wear Lab Apron and Safety Goggles at all times. *Don't stick hands or any other body parts into open flame. *Don't attemp to drink bioling water. *Make sure to turn off gas when done. *Always look both ways before crossing the street. *Remember: DO NOT drink and drive. | 6/27/08 | Free | View In iTunes |
| 11 | VideoThe Cathode Project | Procedure Step 1 Plug in tesla coil. Step 2 Turn on or up the tesla coil. Step 3 Touch tesla coil to end of gas filled tube. Step 4 Touch Magnet to the cathode ray. Safety Warning Do not touch yourself or anyone else with the tesla coil while it is on. Do not drop gas filled tubes. Do not drop tesla coil. Be careful when turning on the tesla coil. | 6/27/08 | Free | View In iTunes |
| 12 | VideoDr. Jekyll's Killer | Materials- Lab apron, goggles, Hydrochloric acid, test tube holder, test tube, zinc, & two graduated cylinders. Safety Precautions-Make sure lab apron and goggles are on during experiment, and be careful not to inhale fumes. Procedure- First pour 5 ml of zinc into one of the cylinders. Then dump 10 ml of the hydrochloric acid in the other empty cylinder. Next place the test tube in the test tube holder (get a little longer test tube to be careful)! First dump in the 5 ml of zinc in test tube. Last dump in the 10 ml of hydrochloric acid (slowly). May not use all 10 ml of acid. | 6/27/08 | Free | View In iTunes |
| 13 | VideoMiracle Grow | vHave a responsible person, or persons, monitor you while doing this experiment. Have a qualified character handle the acid. Perform experiment in a well ventilated area. Do not try this at home. Materials used for this project are: 1. 50 ml beaker with 20 ml of sugar 2. 50 ml beaker with 20 ml of sulfuric acid 3. Empty 50 ml beaker 4. Glass stirring rod 5. Metal pan 6. Safety glasses 7. Lab apron Procedures for this experiment 1. Put lab apron and safety glasses on. 2. Pour sugar into the empty 50 ml beaker. 3. Pour sulfuric acid in with the sugar. 4. Stir the conconction using the glass stirring rod.(see picture dog-leg right) 5. Wait for the acid and sugar to do their "magic". 6. The mixture will now begin to change colors, do not be alarmed, this is normal. 7. Now watch in amazement as a mysterious, new black substance is formed. | 6/27/08 | Free | View In iTunes |
| 14 | VideoPotassium Iodine | A little background: John Dalton was a chemist born in Eaglesfield, England. Among his scientific activities was the keeping of a meteorological journal in which he amassed over 200,000 observations. His contributions to atomic theory included the return to Democritus's theory of tiny indivisible particles called a-toms or atoms that make up the most basic units of matter. Unlike Democritus's theory, however, Dalton's view of the atom was based on experimental observations. The experiment: Two double replacement reactions, potassium iodine + lead nitrate and silver nitrate + potassium chloride, which are illustrated by the following formulas. 2 KI + PbNO3 -----> K2NO3 + PbI2 Ag2NO3 + 2 KCl -----> K2NO3 + 2 AgCl2 Materials: Four 250 mL beakers, two 500 mL beakers. 100 mL of all four above substances. Procedure: In each of the 250 ml beakers, put 100 ml of each substance. Slowly add the potassium iodine and the lead nitrate simultaneously into the larger 500 ml beaker. The chemicals should change from clear to white. Repeat these steps with the silver nitrate and the potassium chloride. This reaction should turn the chemicals from clear to yellow. | 6/26/08 | Free | View In iTunes |
| 15 | VideoLeaning Tower of Carbon | ~Materials~ - 50 mL Sulfuric Acid - 140 ml Beaker - 50 ml Sugar -Safety Goggles & Apron ~Safety Tips~ * Make sure you use safety goggles and apron.* *Don't inhale too much of the gas from this experiment.* *CAUTION- Contents are very hot.* ~Experiment~ Step 1- Pour the sugar into the 140 ml beaker Step 2- Pour the sulfuric acid into the beaker with the sugar Step 3- Hold the beaker and stir Step 4- Stand back and wait | 6/26/08 | Free | View In iTunes |
| 16 | VideoSodium Metal | A British Chemist, Sir Humphry Davy(1778-1829) discovered nitrous oxide also known as laughing gas it was Davy's risky habit to smell new gasses and try to study the effects on the human body of breathing them. It turned out that nitrous oxide made people feel kind of dizzy it made them either really happy or really emotional and stuff like that. To be safe while doing this experiment you should always have safety glasses an apron and some gloves so that you won't be hurt. | 6/26/08 | Free | View In iTunes |
| 17 | VideoPotassium Nitrate - Dynamic Duo | For this Experiment you will need: Lab Apron and Safety Goggles 1/3 cup potassium nitrate Well Ventilated Area Matches Supervision Tray and Spatula 1/3 cup sugar Tape and Meter Stick Safety Tips: 1. Wear your goggles and apron. 2. Have supervision always. 3. Let the experiment cool for 12 hours before touching. Procedures for Experiment: 1. Put on your apron and safety goggles. 2. Go to a well ventilated area. 3. Drag your supervisor along. 4. Make a pile of Sugar and Potassium Nitrate on the tray. 5. Put 5 match heads in each pile. 6. Tape 2 to 3 matches to the meter stick. 7. Strike the matches and light the piles. 8. Be sure to stand back and observe. 9. Take out the match heads. 10. Make a new pile by combining the two piles. 11. Tape new matches to the meter stick and strike away. 12. Stand back and observe. Clean Up!!! | 6/26/08 | Free | View In iTunes |
| 18 | VideoCaptain Peroxide Meets the Forelli Brothers | By introducing a catalyst (in this case MNO2) to a compound we can witness a decomposition reaction. Materials: A graduated cylinder, tissue paper, water, 30% hydrogen peroxide, manganese dioxide, string, scoopula, apron, gloves, and safety goggles. A fume hood is also highly recommended. Procedure: Place 75 mL of the 30% hydrogen peroxide solution in a graduated cylinder. Add 25 mL of water, making the total 100 mL. On a square piece of tissue paper, folded a few times for thickness, place two small scoops of manganese dioxide in the center. Note: the more manganese dioxide you use, the more explosive the reaction. Just a little bit is recommended. Fold the piece of tissue into a bundle and tie it with the string. Make the string long enough that you can lower the bundle into the graduated cylinder from a safe distance. When you have made the little packet, lower it slowly into the graduated cylinder from the side. Do not lower it from directly above the cylinder as that is in the way of the reaction. If the packet is too large to fit inside the cylinder, re-pack it with your fingers until it is the right size. | 6/26/08 | Free | View In iTunes |
| 19 | VideoZinc Burns | The reactants were Zinc and Iodine, and the product was Iodine gas. Materials Needed 4 grams of iodine crystals 1 gram of zinc shavings spatula watch glass water dropper (containing water) mortar and pestle safety equipment: goggles, apron, and gloves fume hood, or well ventilated area scale Procedure Weigh out correct amounts of zinc and iodine. Grind up iodine crystals in mortar. Put ground up iodine and zinc in watch glass and stir using spatula. Put watch glass in fume hood. Slowly drop water into watch glass and watch for reaction. Avoid breathing fumes, their toxic. | 6/26/08 | Free | View In iTunes |
| Total: 19 Episodes |
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