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Now You See It—Now You Don't - An Oscillating Chemical Reaction—Chemical Demonstration Kit

By: The Flinn Staff

Item #: AP4423

Price: $37.00

With the Now You See It—Now You Don’t Oscillating Chemical Reaction Demonstration Kit, pretend magical powers cause the color of a solution to alter. The color of the solution will oscillate about every 35 seconds for one-half hour.

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This item can only be shipped to schools, museums and science centers

Product Details

Amaze your students! Pretend you have magical powers that can cause the color of a solution to alter between orange and colorless. Simply add three white solids to a colorless solution and presto—the solution turns orange, then colorless and orange again. The color of the solution will oscillate approximately every 35 seconds for one-half hour or more. A magnetic stirrer is highly recommended. Teacher Demonstration Notes included.

Concepts: Oscillating reactions, reaction mechanisms.
Time Required: 20 minutes
Chemicals Provided: Malonic acid, potassium bromate, manganous sulfate, sulfuric acid solution.
Note: Perform this demonstration in a fume hood or well-ventilated lab.