jsnyde0506 jsnyde0506

12-05-2021
Biology

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What is the hallmark of a chemical change?

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hannahgrace524 hannahgrace524

12-05-2021

There are five signs that indicate a chemical reaction has occurred: odor, energy change, gas bubbles, precipitate formation, and color change. When any of these changes occur, the reaction is irreversible and cannot be undone.

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