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Classify the following as chemical or physical changes.
(i) Cutting of trees.
(ii) Melting of butter in a Pan.
(iii)Rusting of almirah.
(iv) Boiling of water to form steam.
(v) Passing of electric current, through water and the water breaking down into
hydrogen and oxygen gas.
(vi) Dissolving common salt in water.
(vii) Making a fruit salad with raw fruits and
(viii)burning of paper and wood.
If the chemical composition is changing, then it is a chemical change, and if the chemical composition is remaining the same, then it is not a chemical change.
(a) Cutting of trees—physical change
(b) Melting of butter in a pan—physical change
(c) Rusting of almirah—chemical change
(d) Boiling of water to form steam—physical change
(e) Passing of electric current through water and the water breaking down into hydrogen and oxygen gases—chemical change
(f) Dissolving common salt in water—physical change
(g) Making a fruit salad with raw fruits—physical change
(h) Burning of paper and wood—chemical change
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