Chemistry
Grade-6
Easy

Question

Burning of candles, digestion of food, etc., are the examples of which change?

  1. Physical change
  2. Chemical change
  3. Both a and b
  4. None of these

hintHint:

Chemical changes involve chemical reactions.

The correct answer is: Chemical change


    • Physical changes are reversible and do not produce a new substance.
    • Chemical changes are irreversible, involves chemical reaction and a new substance is formed.
    • When a candle is burnt wax is used up to give light and carbon dioxide is produced.
    • During the digestion of food, food particles are broken into small pieces and it reacts with enzymes to convert them into absorbable form for the body.
    • Burning of candles, and digestion of food are examples of chemical change. 

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