Question

define a,boiling point b, evaporation c, melting point

Answer 1

Hey..
1. Boiling Point -The Temperature at which a liquid changes into a gas at atmospheric pressure.
2. Evaporation -The phenomenon of change of liquid into vapour at any temperature below it's boiling point.
3. Melting point - The Temperature at which solid melts to become a liquid at atmospheric pressure.
Hope this answer helps you....

Answer 2

The temperature at which a liquid boils and turns into vapor


The process of turning from liquid into vapor



The temperature at which a given solid will melt