3.7 Using radioactive materials
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3.7 Using radioactive materials

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Consolidate ideas of nuclear changes and the properties and uses of alpha, beta and gamma radiation, Explain why, over time, the activity of a source decreases

Consolidate ideas of nuclear changes and the properties and uses of alpha, beta and gamma radiation, Explain why, over time, the activity of a source decreases

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    3.7 Using radioactive materials 3.7 Using radioactive materials Presentation Transcript

    • 3.7 Using radioactive materials October 16, 2010 Here is some data from last lesson on popping popcorn. From this table, how long does it take for popcorn to pop? 22 9 3 52 5 2 24 34 1 2nd Attempt 1st Attempt Group Time taken to pop / s  
    • Aims
      • Consolidate ideas of nuclear changes and the properties and uses of alpha, beta and gamma radiation
      • Explain why, over time, the activity of a source decreases
    • α β γ The mass number: The atomic number:
    • What is radiation? Video γ β α
    • Using the text book
      • Write explanations of three ways a nucleus can change: when it emits alpha, beta and gamma
    • Alpha ( α ) Particles Add a number to one or more boxes to accurately describe an alpha particle
    • Beta ( β ) particles Add a number to one or more boxes to accurately describe a beta particle
    • Gamma ( γ ) rays
    • Alpha particles
    • Beta particles
    • Gamma ray
    •  
    •  
    • Worked example
      • What happens when polonium-218 undergoes beta decay?
    •  
    •  
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    • What would the following elements decay into?
      • Uranium-238 via alpha decay
      • Thorium-234 via beta decay
      • Protactinium-234 via beta decay
      • Uranium-234 via alpha decay
    •