IB Physics HL · Unit 5 of 6

IB Physics HL Unit 5: Nuclear and quantum physics

Unit 5 of IB Physics covers Nuclear and quantum physics. This unit contains 5 topics and 22 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

Higher Level students should treat this unit page as a route map: revise the shared core, then use the HL notes and topic links to reach the extra depth and evaluation expected at HL.

5 topics22 sub-topics

Exam technique guide

Topics in Unit 5

5.1

Structure of the atom

6 sub-topics

5.2

Quantum physics (HL)

2 sub-topics

5.3

Radioactive decay

5 sub-topics

5.4

Fission

3 sub-topics

5.5

Fusion and stars

6 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

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Unit 4 Unit 6