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Flinn Lab Activities and Demonstrations
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Energy and Thermodynamics— Demonstration Kits, continued
Bright flashes of light where C2H2 and Cl2 bubbles collide!
Underwater Fireworks—
Chemical Demonstration Kit
By: Bob Becker,
Kirkwood H.S., Kirkwood, MO
Every day can be the 4th of July with this exciting demonstration. Colliding bubbles of gas produce underwater explosions. This demon- stration shows how chlorine and acetylene gas can spontaneously react at room temperature. Safely conducted under water, this demonstration will spark student interest and allow you to discuss many chemical concepts. A one- or two-liter graduated cylinder and some glass tubing will be required. Demonstration Notes included.
Concepts: Gases, activation energy, combustion, electron affinity, hydrocarbons, halogens.
Time Required: 15 minutes
Chemicals Provided: Hydrochloric acid, sodium hypochlorite, and calcium carbide.
Note: Perform this demonstration in a fume hood or well-ventilated lab. See free video at flinnsci.com.
Zinc Pyrotechnics—
Chemical Demonstration Kit
By: The Flinn Staff
A spectacular “fireworks” display is initiated by adding two drops of water to a mixture of dry chemicals. Place a beaker with very small amounts of zinc dust, ammonium nitrate and a catalyst in a fume hood. Add two drops of water to the mixture and watch as sparks, smoke and excitement fill the air. Must be performed on a heat-resistant surface in a fume hood or outdoors.
Concepts: Exothermic reactions, catalysts.
Time Required: 15 minutes
Chemicals Provided: Zinc dust, ammonium nitrate, ammonium chloride.
Whoosh Bottle—
Chemical Demonstration Kit
By: John J. Fortman, Retired
Wow your students with a whoosh! Students just love to see the blue alcohol flame shoot out of the mouth of the bottle and watch yellow dancing flames pulsate in the jug as more air is drawn in. Use this exciting demonstration to teach combustion reactions, molar rela- tionships, and thermodynamics concepts. Have your students write the chemical equation for the combustion of alcohol and predict the volume of water that will be formed. With the detailed procedure and safety information provided, you too can safely perform this popular explosive demonstration. Demonstration Notes included.
Concepts: Thermodynamics, combustion, molar relationships.
Time Required: 15 minutes
Materials Provided: 5-gallon whoosh jug, isopropyl alcohol.
Note: A safety shield and fire blanket are highly recommended when
performing this demonstration. See free video at flinnsci.com.
Underwater Fireworks— Chemical Demonstration Kit AP8728
Catalog No.
Description
Price/Each
AP8728
Underwater Fireworks— Chemical Demonstration Kit
$26.20
Zinc Pyrotechnics— Chemical Demonstration Kit AP9117
Catalog No.
Description
Price/Each
AP9117
Zinc Pyrotechnics—Chemical Demonstration Kit
$24.20
Catalog No.
Description
Price/Each
AP5943
Whoosh Bottle—Chemical Demonstration Kit
$37.35
Whoosh Bottle— Chemical Demonstration Kit AP5943