Melting is a process that causes a substance to change from a solid to a liquid. Melting occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid.Click to see full answer. Keeping this in consideration, what happens when a solid is heated?When a solid is heated, the molecules that make up the solid begin to vibrate. This causes them to take up more space, and the solid matter expands. If the heat continues to build, it may provide enough energy for the particles to break free from their strong attraction to one another, causing the solid to melt. when a solid melts does it absorb or give off heat? The heat you add in the beginning will be absorbed as kinetic energy and the temperature of the solid will increase. When you reach a temperature of 0°C (the melting point for water), the heat you add is no longer absorbed as kinetic energy. Herein, how can you tell when a solid is melting? When we increase the temperature of a solid it will become liquid at its melting point. At low temperatures than melting point the substance remain as a solid. Then from melting point temperature to boiling point the substance will remain as a liquid. This is the temperature at which a liquid become a gas.Why energy is required for a solid to melt?Energy is required to melt a solid because the cohesive bonds between the molecules in the solid must be broken apart so that the molecules can move around at comparable kinetic energies; thus, there is no rise in temperature.

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