IB Physics SL B.1.6 Internal Energy Question Bank
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
- Define internal energy as the total random kinetic and intermolecular potential energy of particles.
- Distinguish internal energy from temperature and thermal energy using phase changes, heating and friction.
- Explain internal energy changes during phase change at constant temperature using intermolecular potential energy.
B.1.6—Internal energy 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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