Nuclear reactions as a source of energy

3 marks · Easy

This question is about the products of nuclear fission.

(a)

In the fission of uranium-235, two types of particles are produced in addition to two lighter nuclei. Name both types.

[2 marks]

(b)

Are the two lighter nuclei produced in fission usually stable or radioactive?

[1 mark]

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(a) Neutrons and gamma radiation.

(b) Radioactive

Common mistakes: Omitting gamma rays or confusing particle types.

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Marking points

B1 (a) · 1 mark · Names neutrons as a type of particle produced.

B2 (a) · 1 mark · Names gamma radiation as a type of particle (accept 'gamma ray(s)').

B1 (b) · 1 mark · States the lighter nuclei are radioactive.

Worked solution

a) Neutrons and gamma radiation are also produced in fission. b) The two lighter nuclei are radioactive.