Fig. 4.1 shows a metal pan resting on an electric hotplate. The pan holds 200 cm$^3$ of water. The diagram is labelled "water", "metal pan" and "hotplate". The pan is heated. The water temperature in the pan rises.
(a)[3]
State and explain the two ways in which thermal energy is conducted in a metal.
(b(i))[2]
Explain, in terms of the forces and distances between particles, why the gas takes up a much larger volume than it does as a liquid.
(b(ii))[2]
State two ways in which boiling differs from evaporation.
(c)[4]
Calculate the specific heat capacity of milk. Give your answer to 3 significant figures.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Electrons that are delocalised / free / mobile” …