When a liquid evaporates, the temperature of the remaining liquid changes. Which of the following correctly describes this temperature change and its molecular explanation?
Temperature change: decreases. Explanation: the most energetic molecules escape, leaving behind molecules with lower average kinetic energy.
Temperature change: decreases. Explanation: the least energetic molecules escape, leaving behind molecules with lower average kinetic energy.
Temperature change: increases. Explanation: the most energetic molecules escape, leaving behind molecules with higher average kinetic energy.
Temperature change: increases. Explanation: the least energetic molecules escape, leaving behind molecules with higher average kinetic energy.
313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.