Question

define melting and melting point of a substance ? long question

Answer 1

Melting The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid at atmospheric pressure. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at standard pressure. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing pointor crystallization point.
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Answer 2

HY THERE 
MELTING - THE PROCESS IN WHICH A SOLID SUBSTANCE MELTS AND CHANGES INTO LIQUID IS CALLED MELTING OR FUSION ........

MELTING POINT - THE TEMPERATURE AT WHICH SOLID SUBSTANCE MELTS AND CHANGES INTO LIQUID AT ATMOSPHERIC PRESSURE IS CALLED MELTING POINT ....
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