Signs of a Chemical Reaction

By , February 5, 2012

Students worked with a number of “reactants” which when put together created a “product”. Our reactant options included cabbage juice, citric acid, calcium chloride (CaCl2), baking soda or water. Everyone got to pick what they wanted to mix together. Mixtures could use only two reactants up to all five.  Students worked in groups of two – one gidaa student with one college student. Groups were able to complete up to ten experiments. It was really fun.

Baking soda and cabbage juice was the most curious combination for Chelsey. “It turned green! (and smelled bad)”. She added CaCl2 to the mixture and it created massive foam and turned from green to pink right away.

Gye put baking soda, citric acid and CaCl2 together and it made a white foam that got thicker over time. It had chunky white spots with cold and warm in different parts. It was really fun.

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