Question

Differentiate between a physical change & chemical change with reference to
a] Nature of change i.e. temporary & reversible or permanent & irreversible.
b] Formation of products.
c] Energy change taking place during the respective change
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Answer 1

Answer:

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A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Physical change is easily reversible i.e original substance can be recovered. Chemical changes are irreversible i.e. original substance cannot be recovered.

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Answer 2

Answer:

A Physical change affects only physical properties i.e. shape, size, etc. A physical change involves very little to no absorption of energy. ... Physical change is easily reversible i.e original substance can be recovered. Chemical changes are irreversible i.e. original substance cannot be recovered