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What is vapourisation
The heat energy supplied to the liquid is absorbed by its molecules and stored in the form of potential energy .The stored potential energy increases the inter-particle space .The force of attraction decreases drastically till it becomes almost negligible .The molecules thus become almost completely free and escape as gas since they cannot remain in liquid state  The process of change of state of matter from solid to gaseous (vapour) state is called vapourisation .


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