Question

1. Fill in the blanks with the correct words from the brackets. 1. Formation of liquid wax from solid wax is a 2. Formation of rust on a bicycle rim is a 3. Bursting of a fire cracker is a 4. The formation of day and night is a 5. When a solid dissolves in a liquid, the volume of the liquid change. (reversible/irreversible) change. (physical/chemical) change. (slow/fast) change. (periodic/non-periodic) (changes/does not change) Match 1.​

Answer 1

Answer:

1. melting of wax

2. chemical change

3. chemical reaction

4. Earth's rotation on its axis

5. reversible change