A cyclist cools down after a race as sweat evaporates from their skin.
Which molecules escape during evaporation and what happens to the average kinetic energy of the molecules remaining in the sweat?
Escaping molecules: the more energetic ones; average kinetic energy of remaining molecules: decreases
Escaping molecules: the more energetic ones; average kinetic energy of remaining molecules: increases
Escaping molecules: the less energetic ones; average kinetic energy of remaining molecules: decreases
Escaping molecules: the less energetic ones; 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.