134,789 views
22 votes
22 votes
Which piece of evidence indicates that a chemical reaction has occurred?

Question 1 options:

melting of a substance


boiling of a substance


formation of a precipitate


freezing of a substance

User Wangzhiju
by
3.1k points

1 Answer

21 votes
21 votes
formation of a precipitate
User Ryan Rinaldi
by
2.8k points
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