When milk turns sour it is a

Chemistry

2 answers:

Andrew [12]4 years ago

8 0

It is a chemical change.

Hope this helps !

Photon

Natalka [10]4 years ago

6 0

<span>It is a chemical change. When milk turns sour for example in a warm room it is a chemical change. If it was a physical change you would be able to undo the souring of milk. Since you can't, it is not a physical change.</span>
~Deceptiøn

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