The pressure that vapors apply on the surface of the liquid at equilibrium is called

The process in which the solid changes directly into vapors without changing in the liquid state is called

A. condensation

B. evaporation

C. boiling

D. sublimation

Conversion of a liquid to a gas at all temperatures is called

A. sublimation

B. evaporation

C. condensation

D. boiling

The temperature at which the solid starts melting is called

A. boiling point

B. freezing point

C. melting point

D. sublimating point

At constant pressure the average kinetic energy of gas molecules increases 2 times if

A. temperature is increased by 2 times

B. temperature is halved

C. no change in temperature

D. temperature remains constant

The average kinetic energy of gas molecules is directly proportional to

A. T2

B. √T

C. T

D. 2T