Give examples to explain the difference between changes that can or cannot be reversed.

Examples of Reversible Changes:
• Melting of Ice into water. By freezing the water we can obtain ice again.
• Folding a paper: By unfolding it, we can undo the change.
• Hot milk to cold milk: By boiling milk, we can make it warm.
Example of Irreversible Changes:
• Burning of candle.
• Bursting of crackers.
• Cutting of trees.

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