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Chemistry
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OpenStudy (anonymous):
You heat two substances, A and B. Both substances change color. When cooled, substance B returns to its original color, but substance A does not. What most likely happened? A chemical change occurred in both substances. A physical change occurred in both substances. A physical change occurred in substance A, and a chemical change occurred in substance B. A chemical change occurred in substance A, and a physical change occurred in substance B.
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