Question

19. What do you mean by change of state of
matter ? Explain :
(a) the change of a solid into a liquid at a
constant temperature, and
(b) the change of a liquid into a gas at a
constant temperature.​

Answer 1

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Answer 2

Answer:

changes। of matter are physical changes which took place in our environment like melting vaporing ....and the changes of solid into liquid this prosses is known as melting n the change of a liquid into a gas at constant temperature is known as vapouraisation