A student investigates how the pressure of a fixed mass of gas changes with its temperature. The volume of the gas is kept constant. Table shows the student's results.
Table: the pressure of a fixed mass of gas at constant volume, measured at five temperatures
| Temperature in ∘C^\circ\text{C}∘C | Pressure in kPa |
|---|---|
| 0 | 100 |
| 20 | 107 |
| 40 | 115 |
| 60 | 122 |
| 80 | 129 |
Describe the pattern shown by the results in Table 1.
The student concludes that doubling the temperature in ∘C^\circ\text{C}∘C doubles the pressure of the gas. Use Table 1 to explain why this conclusion is wrong.
Explain why the pressure of the gas is lower at 0 ∘C0\ ^\circ\text{C}0 ∘C than it is at 80 ∘C80\ ^\circ\text{C}80 ∘C.
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.