A cup of hot coffee is left on a desk. Water gradually evaporates from the surface of the coffee.
How does this evaporation affect the temperature of the remaining cup of coffee, and how does it affect the average kinetic energy of the remaining water molecules?
Temperature of remaining coffee decreases; average kinetic energy of remaining molecules decreases
Temperature of remaining coffee decreases; average kinetic energy of remaining molecules increases
Temperature of remaining coffee increases; average kinetic energy of remaining molecules decreases
Temperature of remaining coffee increases; average kinetic energy of remaining molecules increases
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.