Make 2 chemical solutions and mix them together. Wait a few seconds, then wow! It will suddenly change colors. This is the famous iodine clock reaction in an easy to use kit. Change the concentrations or temperature and the time for the color to appear changes. Do the clock reaction with Eco-foam. Learn about solutions and rates of reaction (kinetics). Contains sodium iodate, sodium sulfite, citric acid, sodium thiosulfate, starch solution, eco-foam, stirrers, spoon, cups, rack and instructions. (Individual Size) Recommended for ages 10 and up with adult supervision. Concepts and Processes: solutions, rates of reaction (kinetics), oxidation states of iodine, concentration, dilution, starch test, measuring, controlling variables, reversible, models This kit is available in both classroom and individual sizes. Note: Warning for those allergic to sulfides.
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