Boiling is a physical process involving the phase transition of a liquid into a gaseous state, characterized by the rapid formation of vapor bubbles throughout the liquid's volume. This transition occurs when the vapor pressure of the liquid matches the surrounding ambient pressure. The boiling point is highly dependent on external pressure; consequently, reducing the atmospheric pressure lowers the temperature at which boiling occurs. Heat energy input increases the kinetic energy of the liquid molecules, causing them to overcome the intermolecular cohesive forces and escape into the gas phase. This process is fundamental to understanding thermodynamics and fluid mechanics.