Physics: section 7 - radioactivity and particles


Mind map of Edexcel GCSE physics, section 7 - radioactivity and particles
James Howlett
Mind Map by James Howlett, updated more than 1 year ago
James Howlett
Created by James Howlett almost 9 years ago

Resource summary

Physics: section 7 - radioactivity and particles
  1. Radioactivity
    1. At the centre of every atom is a nucleus
      1. The nucleus contains protons and neutrons
        1. Electrons are negatively charged
          1. The number of protons in the nucleus is called the atomic number
            1. The total number of protons and electrons in the nucleus is called the mass number
            2. Isotopes are Atoms with different numbers of neutrons
              1. Most elements have a range of isotopes
                1. Isotopes have the same number of protons, but a different number of neutrons
                  1. Each element only has 1 or 2 stable isotopes, all the others tend to be unstable and therefore can be radioactive as it decays
                  2. Radioactive decay is random
                    1. The nuclei of unstable isotopes break down at random
                      1. Each nucleus decays spontaneously, it completely unaffected by physical conditions such as temperature
                        1. When the nucleus decays it spits out one or more types of radiation: Alpha, Beta and Gamma
                          1. In this process, the nucleus often changes into a new element
                          2. Background radiation is everywhere all the time
                            1. Some radioactivity comes from the air, food, building materials, soil rocks . . .
                              1. Comes from radiation from space (cosmic rays) which are mostly from the sun
                                1. Some from all living things
                                  1. Human activity such as nuclear explosions contribute to the total
                                2. The three kinds of radioactivity
                                  1. Alpha scattering and nuclear equations
                                    1. Half-life
                                      1. Uses of nuclear radiatiion
                                        1. Risks from nuclear radiation
                                          1. Nuclear fission
                                            1. Revision questions for section 7
                                              1. 1. List the 3 particles which make up an atom
                                                1. 2. What is the isotonic number of a nucleus ?
                                                  1. 3. What is the mass number of a nucleus ?
                                                    1. 4. What are isotopes of an element ?
                                                      1. 5. Where does background radiation come from ?
                                                        1. 6. Give 2 ways you can detect ionising radiation
                                                          1. 7. Describe what Alpha, Beta and Gamma radiation are
                                                            1. 8. Which is the most ionising type of radiation ?
                                                              1. 9. What type of radiation is stopped by paper ?
                                                                1. 10. What is the half life of an element ?
                                                                  1. 11. Describe 3 uses of nuclear radiaition
                                                                    1. 12. Why is radiation dangerous to living organisms ?
                                                                      1. 13. Why is radioactive decay hard to get rid of ?
                                                                        1. 14. What are the products of the nuclear fission of Uranium-235 ?
                                                                          1. 15. Describe how a chain reaction is set up in a nuclear reactor ?
                                                                            1. 16. What job do control rods and moderators do in a nuclear reactor ?
                                                                            Show full summary Hide full summary


                                                                            GCSE AQA Physics - Unit 3
                                                                            James Jolliffe
                                                                            GCSE AQA Physics 1 Energy & Efficiency
                                                                            Lilac Potato
                                                                            AQA Physics P1 Quiz
                                                                            Bella Statham
                                                                            P2 Radioactivity and Stars
                                                                            Using GoConqr to study science
                                                                            Sarah Egan
                                                                            Junior Cert Physics formulas
                                                                            Sarah Egan
                                                                            Physics 1A - Energy
                                                                            Zaki Rizvi
                                                                            Physics: Energy resources and energy transfer
                                                                            P2a revision (part 1)
                                                                            P2a (part 2)
                                                                            Units of measurement - physics
                                                                            Sarah Egan