CAIE A Level Chemistry 9701 · States of matter
A sealed flask contains nitrogen gas at constant temperature. In the kinetic theory model of an ideal gas, molecules have negligible volume and there are no forces of attraction between them. Using this model, suggest how the nitrogen molecules produce the pressure on the inner walls of the flask.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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