Nuclear reactions as a source of energy
1 mark · EasyState what is meant by the term 'fission' as used in nuclear physics.
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The splitting of a large nucleus into two smaller nuclei, releasing energy.
Also accept: Splitting of a heavy nucleus into lighter nuclei, with release of energy.
Common mistakes: Confusing with fusion; saying joining instead of splitting.
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Marking points
B1 · 1 mark · Identifies fission as the splitting of a large/heavy nucleus into smaller/lighter nuclei, with energy released.
Worked solution
Fission is the splitting of a large nucleus into two (or more) smaller nuclei, releasing energy.