Final answer:
Heating a liquid increases the kinetic energy of its molecules, leading to quicker evaporation as more molecules can overcome intermolecular forces to become vapor. Evaporative cooling cools the remaining liquid, and at the boiling point, all molecules can vaporize. Condensation releases heat to the surroundings.
Step-by-step explanation:
Heating a liquid causes it to evaporate more quickly because it increases the kinetic energy of the liquid's molecules. The higher the temperature, the more molecules have the energy needed to overcome the intermolecular forces and escape into the vapor phase. During the process of evaporative cooling, the molecules with the highest energy evaporate, leaving behind those with lower energy, which results in a decrease in the temperature of the remaining liquid.
When a liquid reaches its boiling point, the vapor pressure is equal to the external pressure, and all the molecules have enough kinetic energy to vaporize; this is when the liquid begins to boil. Additionally, condensation is the opposite of vaporization where heat is released, increasing the temperature of the surroundings.