Question

1. give two examples of physical change which are irreversible
2.how are the following changes different from each other.
a) chaning of milk into curd
b) hot milk becoming cold milk

Answer 1

Answer:

Burning of paper

Tearing of paper

Answer 2

Answer:

1) cracking an egg,breaking a glass

2)a) it is irreversible

b) it is reversible