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- Pressure is measured in the units Pascals (Pa)
- The area should always be the cross-sectional area of the object
- This means the area where the force is at right angles to it
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Random motion of gas molecules in a container
Pressure, force, area formula triangle
Gas molecules hit the sides of the container which creates pressure
At constant volume, an increase in the temperature of the gas increases the pressure due to more collisions on the container walls
You are required to be able to describe the link between temperature and pressure qualitatively. This means that the correct use of terms such as 'collision', 'kinetic energy' and 'frequency', will be really important.
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