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Melting Point

    Melting Point
    Detailed information:
    (mp) The melting point or freezing point of a pure substance is the temperature at which its crystals are in equilibrium with the liquid phase at atmospheric pressure. The term melting point is used when the equilibrium temperature is approached by heating the solid. Ordinarily, mp refers to temperatures above 0C, the melting point of ice. The terms melting point and freezing point are often used interchangeably, depending on whether the substance is being heated or cooled. The number of calories required to convert one mole of pure crystals to the liquid state is called the molar heat of fusion.