Question

1.
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:

Cooking of food

Digestion of food

Rusting of iron

Answer 2

Answer:

(a), (b), (d), (e), (g)