During the process of evaporation, some molecules escape from the surface of a liquid. Which row correctly describes the average kinetic energy of the remaining molecules in the liquid and the corresponding change in temperature of the liquid?
| Average kinetic energy of remaining molecules | Temperature of the liquid | |
|---|---|---|
| A | decreases | decreases |
| B | decreases | increases |
| C | increases | decreases |
| D | increases | increases |
Average kinetic energy of remaining molecules: decreases; Temperature of the liquid: decreases
Average kinetic energy of remaining molecules: decreases; Temperature of the liquid: increases
Average kinetic energy of remaining molecules: increases; Temperature of the liquid: decreases
Average kinetic energy of remaining molecules: increases; Temperature of the liquid: 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.