Question.
Which of the following are chemical changes ?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron fillings and sand
(d) Cooking of food
(e) Digestion of food
(f) Freezing of water
(g) Burning of a candle
Which of the following are chemical changes ?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron fillings and sand
(d) Cooking of food
(e) Digestion of food
(f) Freezing of water
(g) Burning of a candle
Solution:
Rusting of iron, cooking of food, digestion of food, and burning of candle are chemical changes.
Rusting of iron, cooking of food, digestion of food, and burning of candle are chemical changes.
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