A gas is compressed slowly inside a metal cylinder that conducts energy well. The temperature of the gas does not change. Why does the temperature stay the same?
No work is done on the gas because the piston moves very slowly.
The internal energy of a gas does not change when it is compressed.
Energy transferred to the gas by working passes to the surroundings.
The molecules of the gas move more slowly as the gas is compressed.
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.