Physics, asked by harleenkaur522010, 18 days ago

class 6 CBSE
science chapter 6
changes around us ​

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Answered by anandsharmagidcvapi
1

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answer 2

Yes all changes involve interactions.

No, we cannot mean only physical interaction here. It may also be non-physical interactions. Let us give some examples having non-physical interactions.

Conversion of water to vapour by evaporation: Here, water molecules attain kinetic energy due to the surrounding heat, thus they interact with each other and evaporate to vapour.

Chemical reaction between iron and sulphur on heating: By heating, the atoms present in the mixture of iron and sulphur attains energy, interact with each other and form iron sulphide.

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