A student changes the pressure on a fixed mass of gas and measures its volume. The temperature of the gas stays the same.
The table shows the student's results.
Table
| Pressure (kPa\text{kPa}kPa) | Volume (cm3\text{cm}^3cm3) |
|---|---|
| 100 | 50 |
| 125 | 45 |
| 200 | 25 |
| 250 | 20 |
Use the equation: pressure×volume=constant\text{pressure} \times \text{volume} = \text{constant}pressure×volume=constant
One volume reading does not fit the pattern.
At which pressure was this volume recorded?
100 kPa100\ \text{kPa}100 kPa
125 kPa125\ \text{kPa}125 kPa
200 kPa200\ \text{kPa}200 kPa
250 kPa250\ \text{kPa}250 kPa
50 exam-style questions on OCR GCSE Physics 1.3 Pressure, covering 1.3.1 Molecular motion, temperature and gas pressure, 1.3.2 Gas pressure at constant volume, 1.3.3 Compressing and expanding gases, 1.3.4 Gas volume and pressure at constant temperature, 1.3.5 Doing work on a gas, 1.3.6 The Earth's atmosphere and atmospheric pressure, 1.3.7 Atmospheric pressure and height, 1.3.8 Floating and sinking, 1.3.9 Pressure in liquids and upthrust, and 1.3.10 Pressure differences with depth. Each one has a worked solution and a mark scheme showing where the marks go.