Define 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 till all the ice melts even though heat is continuously supplied? What is this heat energy called?
Q. Define 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 till all the ice melts even though heat is continuously supplied? What is this heat energy called?
Ans. (a) The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point.
(b) Ice melts at 273.16 K (or 273 K).
(c) Heat gets used up in changing the state by overcoming the forces of attraction between the particles.
(d) This heat energy is absorbed by ice, so there is no rise in temperature.
(e) Latent heat of fusion.
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