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3.7 Using radioactive materials October 16, 2010 Here is some data from last lesson on popping popcorn. From this table, h...
Aims <ul><li>Consolidate ideas of nuclear changes and the properties and uses of alpha, beta and gamma radiation </li></ul...
α β γ The mass number: The atomic number:
What is radiation? Video γ β α
Using the text book <ul><li>Write explanations of three ways a nucleus can change: when it emits alpha, beta and gamma </l...
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 <ul><li>What happens when polonium-218 undergoes beta decay? </li></ul>
 
 
 
What would the following elements decay into? <ul><li>Uranium-238 via alpha decay </li></ul><ul><li>Thorium-234 via beta d...
 
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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

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Transcript of "3.7 Using radioactive materials"

  1. 1. 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  
  2. 2. Aims <ul><li>Consolidate ideas of nuclear changes and the properties and uses of alpha, beta and gamma radiation </li></ul><ul><li>Explain why, over time, the activity of a source decreases </li></ul>
  3. 3. α β γ The mass number: The atomic number:
  4. 4. What is radiation? Video γ β α
  5. 5. Using the text book <ul><li>Write explanations of three ways a nucleus can change: when it emits alpha, beta and gamma </li></ul>
  6. 6. Alpha ( α ) Particles Add a number to one or more boxes to accurately describe an alpha particle
  7. 7. Beta ( β ) particles Add a number to one or more boxes to accurately describe a beta particle
  8. 8. Gamma ( γ ) rays
  9. 9. Alpha particles
  10. 10. Beta particles
  11. 11. Gamma ray
  12. 14. Worked example <ul><li>What happens when polonium-218 undergoes beta decay? </li></ul>
  13. 18. What would the following elements decay into? <ul><li>Uranium-238 via alpha decay </li></ul><ul><li>Thorium-234 via beta decay </li></ul><ul><li>Protactinium-234 via beta decay </li></ul><ul><li>Uranium-234 via alpha decay </li></ul>
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