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

A. melting of a substance
B. boiling of a substance
C. formation of a precipitate
D. freezing of a substance

User Thurston
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2 Answers

4 votes

c) formation of a precipitate

User Michael Zuschlag
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6 votes

I believe the answers is C

User Pedrofurla
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