(a(i))[1]
A liquid is heated until bubbles of its vapour rise through it and molecules move into the atmosphere. State the name of this process.
(a(ii))[1]
At a temperature lower than in (a)(i), molecules escape from the surface into the atmosphere. State the name of this process.
(b(i))[4]
Calculate the power output of the heater.
(b(ii))[2]
State and explain a precaution that may be taken to improve the accuracy of the experiment.