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Product 12823

By: The Flinn Staff

With the Iodine Clock Challenge Kinetics Guided-Inquiry Kit, give students a challenge and they will eagerly compete to meet or beat the goal! Promote inquiry with the classic iodine clock reaction.

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Give students a challenge, and they will eagerly compete to meet or beat the goal! Promote inquiry with the classic iodine clock reaction. Students record reaction times for three concentrations of potassium iodate, then analyze and graph the results to predict the concentration needed to make the clock “ring” in exactly 25 seconds. After several trial runs to refine their graphs and test their predictions, students are ready for their final test, against the clock! Complete for 30 students working in groups of three.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking

Disciplinary Core Ideas

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

Crosscutting Concepts

Patterns
Scale, proportion, and quantity
Stability and change

Performance Expectations

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.