(a)[1]
State how the water particles behave as the water temperature rises.
(b(i))[2]
Show that the water in the saucepan has a mass of 0.25 kg.
(b(ii))[3]
Calculate the energy needed to raise the water temperature from 20 ^{\circ}C to 65 ^{\circ}C.
(b(iii))[1]
Suggest why the measured heating time is longer. Assume that the student has taken accurate measurements.
(c)[2]
Explain how using an aluminium saucepan affects the time needed to heat the water.