Question

the
L
ong
Answer Question
19. Grive two examples for each of
following cases
which
a Physical changes atnga which are
و
reversible
by Physical changs which are not
3
c) Chemical changes
rew essible​

Answer 1

Answer:

a) Reversible physical changes are dissolving and melting of ice to liquid

b) Irreversible physical changes are grinding crushing a can and breaking a glass

c) Irreversible chemical changes are burning a paper and burning a candle (it's also a physical change as the wax of the melted candle can be collected and burnt again and it is a chemical change as once it is burnt it can't be burnt again)