Question

1. Write the options in brackets.

i. Which is the physical change? ( )
a. water freezing into ice
b. Mixing of salt and water
c. Burning a paper
d. Shaping clay into different shapes

ii. Which is the chemical change? ( )
a. Burning of wood
b. Tearing a paper into pieces
c. Plants making their own food
d. Rusting of an iron nail

This is for Physics & Chemistry both.

Answer 1

Answer:

(i)ans=

(a)water freezing into ice

(ii)ans=

(d) rusting of iron nail

Answer 2

Answer:

PHYSICAL CHANGES :

• Water freezing into ice.
• Mixing of salt and water (coz salt can again be obtained by heating the solvent)
• Shaping clay into different shapes.

CHEMICAL CHANGES :

1. Burning of wood
2. Plants making their own food
3. Rusting of an iron nail.

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