(a(i))[1]
State the name of the change of state shown by A on the diagram.
(a(ii))[1]
State the name of the change of state shown by B on the diagram.
(a(iii))[1]
State the name of the change of state shown by C on the diagram.
(b)[1]
Explain why energy must be supplied to change a liquid into a gas.
(c)[1]
Which container has the greater pressure? Explain your answer.