Question

what is physical and chemical change

Answer 1

There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.


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Answer 2

The change in physical properties of any substance.It is reversible.Switch off the light.
The change which occurs in chemical properties of a substance.Ut is irreversible.
Eg. making of curd,burning of paper etc.
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