Answer
The particles with the highest kinetic energies are the first to escape the liquid when it is boiling. Therefore, the remaining liquid molecules are then at a lower average kinetic energy and therefore at a lower temperature. This explains why boiling is a cooling process.
Work Step by Step
The particles with the highest kinetic energies are the first to escape the liquid when it is boiling. Therefore, the remaining liquid molecules are then at a lower average kinetic energy and therefore at a lower temperature. This explains why boiling is a cooling process.