Nuclear Power

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  • Created by: Nadia
  • Created on: 22-12-12 16:19
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  • Nuclear Power
    • When there is an imbalance between the number of protons and neutrons cause the atomic nuclei to be unstable and emit radiation
      • the number of proton and neutrons in an atom's nucleus (mass number)
        • the number of protons is the atomic number
      • the number of protons is the atomic number
    • different isotopes of an element all have the same number of protons but different neutrons
    • data about nuclear symbols can be used to produce and balance nuclear equations
    • a sustainable chain reaction can be caused by: absorbing slow neutrons inducing fission of U-235 nuclei, releasing energy and emitting neutrons from this fission
      • moderator material in nuclear reactor acts to slow down the fast-moving neutrons produced by the nuclear fission process so they can cause further fission
      • control rods are neutron-absorbing rods that are move up and down to control the number of thermal neutrons inside the fuel rods
    • most of the decay products of nuclear fission are radioactive, usually with very long half-lives
      • so they have to be stored within the containment structure of nuclear reactors
    • high energy collisions between light nuclei can result in fusion, releasing large amounts of energy
      • especially isotopes of hydrogen
    • Fusion requires very high temperatures to occur which are difficult to achieve and control
      • other problems of containment of fusion and fission include neutron/ gamma shielding and pressure containment in fusion reactors
  • different isotopes of an element all have the same number of protons but different neutrons

Comments

smith_jack99

Thankyou very much Miss KHP. This mindmap is fantastic.

Miss KHP


Nice and clear mindmap that can be used to help you understand the topic of nuclear power and relate it to fission and fusion. It can be used for all GCSE boards.

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