.............. is the amount of heat energy required to change 1 kg of solid into liquid at its melting point.

The latent heat of fusion of ice is the amount of energy required to change 1 kg of ice completely Into water at atmospheric pressure :

What is the reason for a substance to change from solid to liquid state ?

The amount of heat energy required to raise the temperature of 1 g of helium at NTP, from T_(1)K to T_(2)K is

Calculate DeltaS of water at its melting point.

Do all substances change from solid to liquid and liquid to gas on heating ? Explain.

Can the change of state from liquid to vapour take place without the liquid reaching its boiling point ?

The amount of heat required to convert 1 gm of Ice at 0^(0) to 1 gm of steam at 100^(0) C.

The amount of heat energy required to overcome the attraction between particles of matter is called -

What term is used to describe the phase change of a solid to a liquid?

Assume that heat capacity of H_(2) O to be 4.2 xx 10^(3) J kg ^ (-1) K^(-1) and the latent heat of vapourisation of H_(2) O to be 22.5 xx 10^(5) J kg^(-1) . The amount of heat in joule required to heat 1 kg of water from 50^(@)C to 100^(@)C and then to convert into steam at 100^(@)C is