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Chemistry, 05.02.2020 05:59 genyjoannerubiera

You heat two substances, a and b. both substances change color. when cooled, substance a returns to its original color, but substance b does not. what most likely happened? . a. a physical change occurred in both substances.. b. a physical change occurred in substance a, and a chemical change occurred in substance b.. c. a chemical change occurred in substance a, and a physical change occurred in substance b.. d. a chemical change occurred in both substances.

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