A sealed, rigid glass bulb contains nitrogen gas. The bulb is transferred from a warm laboratory at 22 ∘C22\text{ }^\circ\text{C}22 ∘C into a cold freezer at −18 ∘C-18\text{ }^\circ\text{C}−18 ∘C.
Assuming the volume of the bulb remains completely constant, which of the following properties of the gas does not change?
The pressure inside the glass bulb
The average distance between the nitrogen molecules
The average kinetic energy of the nitrogen molecules
The frequency of collisions between the molecules and the inner walls of the bulb
38 exam-style questions on Edexcel GCSE Physics 14.3 Gas pressure and temperature, covering 14.3.1 Gas pressure and particle motion, 14.3.2 Temperature and pressure at constant volume, 14.3.3 Absolute zero and the kelvin scale, 14.3.4 Compressing and expanding gases, 14.3.5 Volume and pressure at constant temperature, and 14.3.6 Doing work on a gas. Each one has a worked solution and a mark scheme showing where the marks go.