IB Physics SL B 1 6 Internal Energy Questions
Practise explaining internal energy through particle kinetic and potential energy, phase changes, heating and friction in exam questions.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- Describe internal energy as the sum of intermolecular potential energy and random molecular kinetic energy.
- Relate heating, cooling and state changes to transfers between these microscopic energy contributions using complete evidence.
IB Physics SL B 1 6 Internal Energy Questions question 1
[Maximum number: 2]
Distinguish between internal energy and thermal energy (heat).
Internal energy:
Thermal energy:
internal energy: the sum of the potential and the (random) kinetic energy of the molecules/particles of a substance;
thermal energy:
the (non-mechanical) transfer of energy between two different bodies as a result of a temperature difference between them;
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