Describe the boiling process of a liquid.

There are usually small air bubbles in the liquid and on the walls of the vessels, inside of which the liquid evaporates. Evaporation in air bubbles stops when the saturated vapor pressure is reached. When the temperature rises, the saturated vapor pressure inside the bubbles exceeds the value of the external pressure. A rapid expansion of vapor bubbles inside the liquid begins, and the bubbles float. This process is called liquid boiling.

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