Question

Which of the following are chemical changes? (a) Growth of a plant (b) Rusting of iron (c) Mixing of iron filings and sand (d) Cooking of food (e) Digestion of food (1) Freezing of water (g) · Burning of a candle.​

Answer 1

Answer:

1. a
2. b
3. d
4. e
5. g

these are the chemical changes

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Answer 2

A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed.

Example :- Digestion of food, Rusting of iron, Cooking of food, Burning of candle, Growing of plant.

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