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3 marksAtomic Mass

CAPE Physics Unit 2 · 2005 · Paper 2 · Question 9(a)(i)

Questions on nuclear fusion, fission, binding energy, and nuclear energy.

Explain what is meant by 'nuclear fusion' and 'nuclear fission' and state which process is responsible for the energy release of the Sun.

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Other parts of this question

  1. 9(a)(ii)Explain why a neutron would penetrate farther into a sample of matter than an alpha particle of the same energy.[2 marks]
  2. 9(a)(iii)What does the binding energy per nucleon versus mass number curve indicate about the stability of nuclei and the processes by which nuclei achieve this…[3 marks]
  3. 9(b)(i)How many atoms are contained in 1.0 kg of Uranium-235?[3 marks]
  4. 9(b)(ii)Using the masses given, calculate the energy, in joules, released by 1.0 kg of Uranium-235 by fission.[7 marks]
  5. 9(b)(iii)Using your answer to (ii) above, explain why nuclear fission is such a desirable source of energy.[2 marks]

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