Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

The isotope uranium-235 is shown as $^{235}_{92}\text{U}$.
(a)[2]

State what the numbers 92 and 235 stand for in this symbol.

(b(i))[1]

State the process through which energy is released from uranium-235 in a nuclear reactor.

(b(ii))[2]

Describe the mass and energy changes that occur during this process in a nuclear reactor.

(c(i))[3]

Describe how thermal energy from nuclear reactions is used to generate electricity in a power station.

(c(ii))[2]

State one advantage and one disadvantage of using nuclear fuels in a power station rather than fossil fuels.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: 92 is the proton/atomic number

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