Question

how does kinetic and ptential energy of a body changes during the changes of state

Answer 1

Hey mate, here is your answer :

Hey man, your assumption is wrong, but your intuition is correct. A gas has more movement and hence has more kinetic energy and less potential energy. During a change of state, that is what happens. When a liquid turns into a gas, there is an increase in kinetic energy and a subsequent decrease in potential energy. This sums up to total energy of the change of state (or the total energy after this transformation of state occurs)

Hope this answer helps you...