Physics A-Level
Kinetic energy of molecules
What Kinetic energy of molecules means in Physics A-Level, as defined for OCR.
Definition of Kinetic energy of molecules
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Reference: OCR
Each molecule has a mean translational kinetic energy of 3/2 kT, so for N molecules the total is U = 3/2 NkT.
Topics that use Kinetic energy of molecules
- Ideal gases (OCR A-Level)
Related terms
- Absolute zero
- Assumptions of ideal-gas behaviour
- Assumptions of kinetic theory
- Avogadro constant
- Boltzmann constant
- Gas laws
- Ideal gas assumptions
- Internal energy and the ideal-gas model
Using Kinetic energy of molecules in the exam
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