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1. Classify the following changes in as many ways as possible :
(a) Growth of a tree (b) Burning of paper (c) Weathering of a rock (d) Making ice-cream from
2. State two changes which are reversible.
3. Mention one application of expansion on heating and contraction on cooling,
4. Classify the following into physical and chemical changes.
(a) Melting of wax (b) Burning of agarbatti (c) Tearing of cloth (d) Cooking o
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- both physically or chemical
- chemical changes
- both physica or chemical
- chemical changes
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