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Classify the following as physical and c...

Classify the following as physical and chemical changes.
(i) Conversion of milk into curd
(ii) Burning of magnesium ribbon in air
(iii) Rusting of iron nails
(iv) Dissolving salt in water
(v) Burning of cool
(vi) Electrolysis of sodium chloride solution by passing current
(vii) Crystallisation of copper sulphate.

Text Solution

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(i) Chemical change (ii) Chemical change (iii) Chemical change (iv) Physical change (v) Chemical change (vi) Chemical change (vii) Physical change.
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