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Product 12597

By: Jim and Julie Ealy, Retired , The Peddie School, Hightstown, NJ

The Yellow and Blue Switcheroo Chemical Demonstration Kit
The Yellow and Blue Switcheroo Chemical Demonstration Kit
The Yellow and Blue Switcheroo Chemical Demonstration Kit will have students thinking you are the king or queen of chemistry. If you’ve never seen or performed an oscillating clock reaction, don’t pass this one up; it's fit for a king.

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Your students will think you are the king or queen of chemistry when you do this amazing demonstration. Three colorless solutions are mixed to produce a yellow solution and then suddenly the solution turns blue, then yellow again, etc. The solution will oscillate between yellow and blue for ten minutes. If you’ve never seen or done an oscillating clock reaction, don’t pass this one up; it’s fit for a king! Teacher Demonstration Notes included.

Concepts: Oscillating reactions, kinetics.
Time Required: 15 minutes
Chemicals Provided: Hydrogen peroxide solution, acidified potassium iodate solution, starch-malonic acid-manganese(II) sulfate solution.
Note: Perform this demonstration in a fume hood or well-ventilated lab.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Stability and change
Cause and effect
Patterns

Performance Expectations

MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-PS1-6. Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.