What happens when a liquid is heated to its boiling point? Does a liquid change into the vapour state only at its boiling point?
Define boiling point of a liquid. At what temperature in the Kelvin scale does water boil ? Explain what happens when we supply heat energy to water till it changes its state. What is this heat energy called ?
Below the boiling point of a liquid evaporation takes place. Then when the liquid is being heated to vaporise it, before reaching its boiling point does the liquid not evaporate?