Question

Write five changes that we observe in daily life.

Answer 1

Answer:

1 Making curd from milk chemical and irreversible change.

2 Boiling an egg chemical and irreversible change.

3 Tearing of paper physical and irreversible change.

Answer 2

Answer:

i. Dissolving of salt in water

ii. Freezing of water into ice

iii. Melting of candle

iv. Evaporation of water

v. Heating nails

vi. Pounding fufu

vii. Dissolving of sugar in water

Substances that undergo physical changes can

be obtained through physical methods. When water freezes, it is only the physical state of the water that changes (the water (liquid)