Question

34. Answer the following
(a) Define melting point of a solid.
(b) At what temperature in the Kelvin scale does the ice melt?
(C) Why does the temperature not rise till all the ice melts even though heat is continuously
supplied?
(d) What is this heat energy called?​

Answer 1

Answer:

(a) The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid.

(b) The melting point of ice on Kelvin scale is 273 K.

(c) when the heat is supplied continuously to the ice, its temperature does not increase. ... The temperature does not increase because the ice is absorbing the energy in the form of latent heat of fusion to over come the force of attraction aming the particles of Ice. This heat is hidden and is called latent heat of fusion.

(d) Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.

The energy that comes from the temperature of the heated substance is called thermal energy.

Explanation:

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