Edexcel IGCSE Physics 7.20 Chain reactions
Practise explaining how neutrons from U-235 fission are absorbed by other nuclei, causing repeated splitting and further neutron release.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- describe a chain reaction as fission neutrons being captured by other U-235 nuclei
- explain the repeat process: nucleus splits, releases neutrons, and causes more fission
7.20 Chain reactions question 1
[Maximum number: 3]
Describe what is meant by a chain reaction.
- fission releases neutrons
- neutrons can be captured by other uranium nuclei
- these nuclei then undergo fission
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