Give two examples of each of the following:-
1-irreversible physical change
2-reversible chemical change
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7
cutting of paper and cutting of wood-physical
burning of candle and mixing calcium oxide and water-chemical
burning of candle and mixing calcium oxide and water-chemical
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4
ice cube ,water -reversible
shattering of glass , smoke -irreversible
shattering of glass , smoke -irreversible
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