Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

In the treatment of brain cancer, an isotope of boron is used. The boron attaches itself to cancer cells in the brain.
(a(i))[1]

Describe one way fission differs from fusion.

(a(ii))[3]

Complete the nuclide equation for the fission reaction shown: $\,\_\_\_\,\text{B} + ^{1}_{0}\text{n} \rightarrow \,\_\_\_\,\text{Li} + \,\_\_\_\,\alpha$.

(b)[2]

Suggest and explain one reason alpha particles are better suited than gamma radiation for this brain cancer treatment.

(c)[1]

Describe one safety precaution that a nurse or radiologist uses during this treatment.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: Fission means nuclei splitting OR fusion means nuclei joining

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