Define the melting point of a solid. At what temperature in the Kelvin scale does ice melt? In the experiment to determine the melting point of ice,why does the temperature not rise until all the ice melts,even though heat is continuously supplied? What is this heat energy called?

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(N/A) The temperature at which a solid melts to become a liquid at atmospheric pressure is called its melting point.
$(b)$ Ice melts at $273.16 K$ (or $273 K$).
$(c)$ The temperature does not rise because the heat supplied is used up in changing the state of the substance by overcoming the forces of attraction between the particles.
$(d)$ This heat energy is known as the latent heat of fusion.

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