Question

wich of the following are chemical changes?
1. growth of plants
2.Rusting of iron
3.cooking of food
4.Digestion of food
5.Burning of candle​

Answer 1

Answer:

If the chemical composition is changing, then it is a chemical change, and if the chemical composition is remaining the same, then it is a physical change.

Growth of a plant, rusting of iron, cooking of food, digestion of food, and burning the candle are chemical changes because here is the chemical composition of the substance changes.

Answer 2

Answer:

2 rusting of iron

Explanation:

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