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GCSE Combined Science · key term
Continuous movement with no overall preferred direction; collisions change the directions in which gas molecules travel.
Used by AQA and Edexcel
Specification 6.3.3.1 · Paper 5
Revise: Particle Motion in GasesA gas may look still, but its molecules are in constant random motion. They move through the space available to them in many different directions. ‘Constant’ means that the motion continues, not that every molecule has a constant speed or direction.
Paper 5, Paper 6
Movement in changing, unpredictable directions rather than along one shared path.
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