(a)[2]
The outer surface of a freezer is painted white. Explain one benefit of having the freezer’s outside surface painted white.
(b(i))[3]
The freezer lid is shut, so air at room temperature is trapped inside. The freezer is then switched on. State and explain, using ideas about molecules, what happens to the air pressure in the freezer as it cools.
(b(ii))[1]
Once the freezer has reached its operating temperature, the lid becomes harder to open. Explain why.