A puddle of water is evaporating at room temperature. Which statement correctly describes the effect of this evaporation on the remaining water?
The average kinetic energy of the remaining molecules increases, causing the temperature of the water to rise.
The average kinetic energy of the remaining molecules decreases, causing the temperature of the water to fall.
The average kinetic energy of the remaining molecules remains constant, but the temperature of the water falls due to heat loss to the surroundings.
The average kinetic energy of the remaining molecules decreases, but the temperature of the water remains constant because evaporation is an isothermal process.
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.