terryhgivens8786 terryhgivens8786

30-11-2018
Chemistry

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Which of these is an indication that a chemical reaction has occurred? A.Melting of a substance B.Boiling of a substance C.Formation of a gas D.Freezing of a substance

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ladylelya64 ladylelya64

10-12-2018

The answer is formation of gas because melting, boiling, and freezing are only property changes

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