During the process of evaporation, particles escape from the surface of a liquid. Which of the following statements correctly describes the escaping particles and the subsequent change in the average kinetic energy of the remaining molecules?
Less energetic molecules escape, and the average kinetic energy of the remaining molecules increases.
Less energetic molecules escape, and the average kinetic energy of the remaining molecules decreases.
More energetic molecules escape, and the average kinetic energy of the remaining molecules increases.
More energetic molecules escape, 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.