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IrinaK [193]
2 years ago
6

4. milk turning sour

Chemistry
2 answers:
sp2606 [1]2 years ago
7 0
I think it’s a physical
aalyn [17]2 years ago
5 0

Answer:

Chemical change

Explanation:

Hi again. The lactose in the milk is converted to lactic acid by microbes. It has turned into a new substance that is irreversable.

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