How does the heat of vaporization change liquid water into water vapour?

The heat of vaporization facilitates the transition of liquid water into water vapour by providing the necessary energy to overcome the cohesive forces that hold water molecules together in a liquid state.12

In a liquid, particles are held together by attractive forces that maintain a degree of cohesion. To transition into a gaseous state, these particles must gain enough energy to break these long-range attractive forces and move independently. The heat of vaporization is the latent heat absorbed during this phase change, occurring at a constant temperature.23

When heat is added to a liquid at its boiling point, the energy is not used to increase the temperature of the water, but is instead entirely consumed as latent heat to overcome the intermolecular forces. This allows the molecules to escape the liquid phase and enter the disordered, gaseous state. Because this process requires significant energy to break these strong cohesive bonds, the heat of vaporization for water is notably high, which is why steam carries a substantial amount of thermal energy.23