The newest 10 of 10 written questions. Open one to see it on the real paper.
State the relative charge on a nucleus of this isotope.
See it on the paper →State the name of the process by which electrical energy is generated in a nuclear reactor.
See it on the paper →The nucleus of a uranium atom consists of protons and neutrons. State the charge on a proton and the charge on a neutron. Proton CHArGe MEUtFON ChArGe
See it on the paper →Which row describes each reaction and states which reaction is used in nuclear power stations?
See it on the paper →Describe how energy is released in a star such as the Sun.
See it on the paper →Nuclear fuels are used to generate electricity in a nuclear power station. State the name of the process by which a nuclear fuel produces heat.
See it on the paper →What happens to the proton number (atomic number) of the nucleus?
See it on the paper →Which energy source powers the Sun?
See it on the paper →Comprehensive responses • Few candidates identified nuclear fission as the process. Limited responses • Some candidates did not answer the question. • There were no common incorrect answers.
— Examiner report, February/March 2026, 0654/32 Q10(b)(i) (Cambridge)
Comprehensive responses • The charges on a proton and neutron were well known. Limited responses • Some candidates misunderstood the question and seemed to be calculating the numbers of protons and neutrons rather than the charges.
— Examiner report, February/March 2026, 0654/32 Q10(b)(iii) (Cambridge)
There was some misinterpretation of the question with some candidates trying to explain this in terms of energy release through radiation. The best responses referred to nuclear fusion and described this in detail.
— Examiner report, May/June 2025, 0654/42 Q12(b)(i) (Cambridge)
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Electricity is generated in a nuclear power station by the nuclear fission of plutonium‑239. Describe what happens to a nucleus of plutonium‑239 during nuclear fission.
A sample of radioactive material is tested in a hospital laboratory. A detector records the radioactive emissions from the sample. The sample is moved away from the detector. Explain why there is still some radiation detected by the radiation detector. Suggest a source of this radiation. explanation source
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