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The Yellow and Blue Switcheroo

firewatch

Publication 13767

Price: FREE

Three colorless solutions are mixed to produce a yellow solution that suddenly turns blue, then fades to colorless and turns yellow again. The color of the solution will continue to oscillate between yellow and blue for 10–15 minutes. If you have never performed an oscillating reaction for your students, don’t pass this one up—it’s a definite show-stopper!