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1 vote
Which of these is indication that a chemical reaction has occurred?

A. Freezing of a substance

B. Melting of a substance

C. Boiling of a substance

D. Formation of a Preciptate

User Jsaporta
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2 Answers

6 votes
I think it's B, the melting of a substance.
User Nmishin
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4 votes
B.melting of a substance