A student uses pressure×volume=constant\text{pressure} \times \text{volume} = \text{constant}pressure×volume=constant to predict the pressure of the air in a bicycle tyre after the tyre has been pumped up. Why is the prediction unreliable?
The equation only applies to gases that are held in rigid containers.
The mass of air in the tyre increases and the air becomes warmer.
The volume of air in the tyre is too large for the equation to apply.
The equation only applies when the pressure of the gas is decreasing.
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.