Abstract
The processes of evaporation and condensation are considered in the framework of chemical kinetics. At the phenomenological level, the processes of evaporation and condensation were considered using formal kinetics, and at the molecular level, these processes were considered using collision theory. In the framework of formal kinetics, the rate equations for the processes of evaporation and condensation were obtained. In the framework of collision theory, the equations for the rate of evaporation and condensation and for the condensation coefficient were obtained. A comparison of the calculated and available experimental data for the case of evaporation of water into air and for the case of evaporation of metals in a vacuum was made. From these comparisons, the energy characteristics of the surface of water and some metals and the condensation coefficients for these substances were determined.
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