1. Which statement is NOT true about chemical and physical changes? A. Chemical and physical changes could produce precipitates. B. Chemical changes produce new substances, but physical changes do not.

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asked Aug 14, 2022 179k views

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1. Which statement is NOT true about chemical and physical changes?

A. Chemical and physical changes could produce precipitates.
B. Chemical changes produce new substances, but physical changes do not.
C. Physical changes use energy transferred as heat, but chemical changes do not.
D. Physical and chemical changes could require days for their effects to be noticeable.