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rodikova [14]
3 years ago
14

9) How do you know a chemical change has occurred?

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0
9)=A These two are indications of a chemical change. (I am positive it is A)
10)=A It is not D and the others don't seem as right so I hope this helps.
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