jsnyde0506
jsnyde0506
12-05-2021
Biology
contestada
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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