Physics A-Level
Internal energy changes in gases
What Internal energy changes in gases means in Physics A-Level, as defined for AQA.
Definition of Internal energy changes in gases
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Reference: AQA
Compressing a gas quickly does work on it, increasing internal energy and raising temperature; a gas expanding and pushing a piston does work on the surroundings, decreasing internal energy.
Topics that use Internal energy changes in gases
- Thermal energy transfer (A-level only) (AQA A-Level)
Related terms
- Change of state
- Conservation of energy
- Energy transfer by heating and work
- First law of thermodynamics
- Ideal gas
- Internal energy
- Mass flow rate
- Power
Using Internal energy changes in gases in the exam
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