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Is Milk Going Sour A Physical Or Chemical Change?

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Anonymous Profile
Anonymous answered
Heating up the milk
Anonymous Profile
Anonymous answered
Milk that has turned sour has undergone a chemical change. Lactose is converted to lactic acid which sours the milk.
Anonymous Profile
Anonymous answered
Milk can be turned into - yogurt - cream - butter - cheese.
Anonymous Profile
Anonymous answered

What are all these questions about physical vs chemical changes? Physical changes ARE chemical changes, and, conversely, chemical changes can cause changes in physical appearance and structure. They are fundamentally the same question.

Mary Patterson Profile
Mary Patterson answered

I am not sure about the question connected to the changes of such type. But I am happy to work on this base with the reliable company where I order a lot of items to simplify my life and work.

Anonymous Profile
Anonymous answered
I would say that it is a change in ph sure it looks like a physical change but maybe that is a side-effect of the ph changing to a hight acidity level and if you think about it why would we call it milk has gone sour if the ph did not change from a base to slightly more acidic (sour things are acidic)
wilbert u can call me sue Profile
Chemical change, it is decomposing, add enzimes to milk, and you can change it to cheese, or yogurt, etc.

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