Nuclear chemistry

    Cards (19)

    • What is nuclear chemistry the study of?
      Break up of unstable nuclei
    • How does nuclear chemistry change unstable nuclei?
      It transforms them into more stable nuclei
    • What does the stability of a nucleus depend on?
      Proton to neutron ratio
    • What do radioactive isotopes change in a nucleus?
      Neutron to proton ratio
    • What are the three types of radiation?
      Alpha, Beta, Gamma
    • What is an alpha particle?
      A slow moving positively charged particle
    • How are alpha particles attracted?
      To the negative plate
    • What is a beta particle?
      A fast moving negatively charged particle
    • How is a beta particle formed?
      When a neutron splits into a proton and electron
    • What can beta particles penetrate?
      Thin metal foil
    • What are gamma waves?
      Electromagnetic radiation from the nucleus
    • What stops gamma rays?
      Thick lead or concrete
    • What is nuclear fusion?
      The combining of nuclei to form a heavier nucleus
    • What is nuclear fission?
      The splitting of a heavy nucleus into lighter nuclei
    • What is half-life?
      The time taken for half of a radioactive sample to decay
    • If a radioisotope has a half-life of 30 minutes, how long will it take for a sample to decay?
      Depends on the initial mass
    • If a 1g sample of a radioisotope has an activity of 32 counts/sec, what is the activity of a 2g sample?
      It would take longer to decay
    • What happens to the activity of Carbon-14 over time?
      It decreases as it decays
    • What is the half-life of Carbon-14?
      5730 years
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