Question

give example of changes that can be reversed any (4) and give example of changes that cannot be reversed any (4)​

Answer 1

Answer: Changes that can be reversed :

Melting of Ice into water. By freezing the water we can obtain ice again.  

By folding a paper; By unfolding it, we can undo the change.

Hot milk to cold milk: By boiling milk, we can make it warm.

Examples of irreversible changes ;  

Burning: When we burn a piece of paper or wood, it turns to ash and smoke. We cannot obtain paper and wood from the ash again.

Cooking: We use heat for cooking, right? Once we cook our eggs, we cannot uncook them. ...

Rusting of iron: You must have seen rusting of iron.  

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