6.3.3 Particle model and pressure

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Learning Checklist & Knowledge Organisers

6.3.3 Particle model and pressure (Higher Only)

Explain why the molecules of a gas are in constant random motion and that the higher the temperature of a gas, the greater the particles’ average kinetic energy
Explain, with reference to the particle model, the effect of changing the temperature of a gas held at constant volume on its pressure
Calculate the change in the pressure of a gas or the volume of a gas (a fixed mass held at constant temperature) when either the pressure or volume is increased or decreased