What causes a gas to exert a pressure on the walls of its container?
The molecules of the gas colliding with each other.
The weight of the molecules resting on the walls.
The molecules of the gas sticking to the walls.
The molecules of the gas colliding with the walls.
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.