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Rasek [7]
3 years ago
15

What are the signs that a chemical reaction has occurred

Chemistry
2 answers:
Finger [1]3 years ago
8 0
Well. There is the color change and the formation of bubbles. 
MrRa [10]3 years ago
8 0
Color change, formation of a precipitate, heat, formation of a gas, and odor
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