An ordinary sandwich bag becomes a safe laboratory as students mix chemicals that bubble, change color, and produce gas, heat, and odor. Students then experiment to determine what causes the heat in this chemical reaction.

Chemical Reactions 1999, Great Explorations, Berkeley, CA

ISBN-13: 9780924886065

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Chemical Reactions 1993, University of California, Berkeley, Lawrence Hall of Science

ISBN-13: 9780912511139

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