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tia_tia [17]
3 years ago
12

What is a sign that a chemical change has occurred?

Chemistry
2 answers:
blondinia [14]3 years ago
3 0

Answer:

The production of heat, light, or smoke is observed.

vladimir1956 [14]3 years ago
3 0
The production of heat, light or smoke is observed and the state of matter has changed
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