During the process of evaporation, high-energy molecules escape from the surface of a liquid. What happens to the average kinetic energy of the remaining molecules and the temperature of the remaining liquid?
Average kinetic energy decreases; temperature decreases.
Average kinetic energy decreases; temperature increases.
Average kinetic energy remains the same; temperature decreases.
Average kinetic energy remains the same; temperature increases.
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.