Now You See It - Now You Don't - An Oscillating Chemical Reaction - Chemical Demonstration Kit
by Flinn Scientific
Item #: AP4423
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.
This item can only be shipped to schools, museums and science centers
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 then 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. Enough materials are included to perform the demonstration seven times.
Concepts: Oscillating reactions, reaction mechanisms.
Time Required: 20 minutes
Chemicals Provided: Malonic acid, potassium bromate, manganous sulfate, and sulfuric acid solution.
Note: Perform this demonstration in a fume hood or well-ventilated lab.