Edexcel IGCSE Physics 5.20 gas pressure relationships
Practise gas pressure relationships by linking volume or temperature changes to particle speed, collision frequency and force per unit area.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- Explain lower pressure at larger volume using longer gaps between wall collisions.
- Link higher kelvin temperature to faster particles and a greater force per unit area.
- Use control variables such as fixed mass, constant volume or constant temperature.
5.20 Gas pressure relationships question 1
The diagram shows a manometer, a device used for measuring differences in pressure.
The temperature and pressure of the trapped gas increase when it is warmed.
Explain, in terms of particles, why the pressure of the trapped gas increases.
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