Question

Q5) Melting of butter and curdling of milk are two different kind of changes.
Explain how these changes differ from each other.​

Answer 1

Answer:

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Explanation:

Melting of butter is a reversible change because on freezing, the melted butter changes back to its solid form. Whereas curdling of milk is an irreversible change because on curdling, milk changes to curd and cream, and gets spoilt when not refrigerated, and cannot be changed back to milk by any process.

Answer 2

Answer:

Melting of butter is a physical change which can be reversed. Butter can be solidified again on freezing hence not changing its properties while curdling of milk is a chemical change and cannot be reversed. We can't get milk back from curd hence making it a totally different subsctance.

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