G12 T3 Classwork 1

10 Questions | Total Attempts: 18

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G12 T3 Classwork 1 - Quiz

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Questions and Answers
  • 1. 
    What is a β-particle and from which part of a radioactive atom is it emitted?
    • A. 

      Electron from the nucleus

    • B. 

      Electron from outer orbits

    • C. 

      Helium nucleus from the nucleus

    • D. 

      Helium nucleus from outer orbits

  • 2. 
    A radioactive nucleus contains 138 neutrons. The nucleus emits an α-particle.How many neutrons are in the nucleus after it has emitted the α-particle? 
  • 3. 
    An atom of the element lithium has a nucleon number of 7 and a proton number of 3.Which diagram represents a neutral atom of lithium? 
    • A. 

      Diagram A

    • B. 

      Diagram B

    • C. 

      Diagram C

    • D. 

      Diagram D

  • 4. 
    How many protons are there in a neutral atom of 
  • 5. 
    Which type of radiation has the greatest ionising effect?
    • A. 

      α-particles

    • B. 

      β-particles

    • C. 

      γ-rays

    • D. 

      All have the same ionising effect

  • 6. 
    The diagram shows the paths of three different types of radiation, X, Y and Z.
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 7. 
    A powder contains 400mg of a radioactive material that emits α-particles.The half-life of the material is 5 days. What mass of that material remains after 10 days? 
  • 8. 
    A radioactive nucleus contains 138 nucleons. The nucleus emits an α-particle.How many nucleons are in the nucleus after it has emitted the α-particle? 
  • 9. 
    How many electrons are in a nucleus of  if the atom is neutral?
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