Which statement about the molecules in a sample of gas at a constant temperature is correct?
Every molecule in the gas moves at exactly the same speed.
The molecules have a range of speeds around an average.
The molecules all slow down steadily as time passes.
The molecules move faster near the walls of the container.
40 exam-style questions on AQA GCSE Physics 3.3 Particle model and pressure, covering 3.3.1 Particle motion in gases, 3.3.2 Pressure in gases, and 3.3.3 Increasing the pressure of a gas (HT only). Each one has a worked solution and a mark scheme showing where the marks go.