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Product 12577

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

A Flash of Blue Kinetics and Catalysts Demonstration Kit is a popular starch-iodine clock reaction sure to amaze students and instructors alike. Students will gain experience with clock reactions, kinetics and catalysts.

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Product Details

In a flash, like magic, a colorless solution turns a dramatic dark blue color. You and your students will be amazed by this popular starch-iodine clock reaction. Teacher Demonstration Notes included. Enough materials are provided to perform the demonstration seven times.

Concepts: Clock reactions, kinetics, catalysts.
Time Required: 15 minutes.
Chemicals Provided: Starch solution, sulfuric acid solution, potassium iodate solution, sodium metabisulfite.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Planning and carrying out investigations
Constructing explanations and designing solutions
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

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.
MS-PS1-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
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-PS1-5. Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.