During the process of evaporation from an open container of liquid, which of the following correctly describes the molecules that escape and the effect on the average kinetic energy of the remaining molecules?
The least energetic molecules escape from the surface, and the average kinetic energy of the remaining molecules increases.
The least energetic molecules escape from the surface, and the average kinetic energy of the remaining molecules decreases.
The most energetic molecules escape from the surface, and the average kinetic energy of the remaining molecules increases.
The most energetic molecules escape from the surface, and the average kinetic energy of the remaining molecules decreases.
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.