During evaporation, molecules with the highest kinetic energy escape from the surface of a liquid. Why does the temperature of the remaining liquid fall?
The average kinetic energy of the remaining molecules decreases.
The molecules left in the liquid have less space to move around.
The escaping molecules transfer cold energy to the liquid.
The remaining molecules lose potential energy, which reduces the temperature.
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.