Physics GCSE
molecule number
What molecule number means in Physics GCSE, as defined for AQA.
Definition of molecule number
Check what you remember
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Reference: AQA
The count of air molecules above a surface, which decreases as the height of the surface above ground level increases.
Topics that use molecule number
- Atmospheric pressure (AQA GCSE)
Related terms
- altitude
- average density
- collision frequency
- column of air
- comparing heights
- compression by the air above
- extra layer of air
- force per unit area
Using molecule number in the exam
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