A sealed container of gas is heated from 20 ∘C20\ ^\circ\text{C}20 ∘C to 60 ∘C60\ ^\circ\text{C}60 ∘C. The volume of the container does not change. Which quantity stays the same?
The average kinetic energy of the molecules of the gas.
The number of collisions with the walls each second.
The average speed of the molecules of the gas.
The number of molecules inside the sealed 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.