10/7 How does the nucleus change? - Part II

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10/7 How does the nucleus change? - Part II

  1. 1. Launch:10/7   Grab a your binder and immediately take a seat   Place last night’s homework on your desk 1.  Identify which type of radiation ( , , or ) can penetrate the following: i.  A piece of paper ii.  A piece of cardboard iii.  A thin piece of wood iv.  A thin piece of metal v.  A really thick piece of lead
  2. 2. Unit #3: Nuclear Processes
  3. 3. How does the nucleus change during radioactive decay? Mr. Heffner 10/7/09
  4. 4. What is radioactive decay?   During radioactive decay… Parent Isotope Daughter Product (Unstable) (Stable) α, β, or γ particle
  5. 5. How can we predict the daughter products?   Three step process   Step #1: Express isotope as a symbol   Step #2: Set-up the equation   Step #3: Solve and identify the element
  6. 6. Group Review
  7. 7. How many protons does Oxygen-15 have?
  8. 8. How many neutrons does 238 U have? 92
  9. 9. How many valence electrons does fluorine (F) have?
  10. 10. Draw Carbon-13.
  11. 11. What is the symbol for an alpha ( ) particle?
  12. 12. What is the daughter product for the beta decay of Bismuth-210?
  13. 13. What is the correct daughter product for the alpha decay of Francium-226?
  14. 14. What happens to isotopes during alpha and beta decay that does not during gamma decay?
  15. 15. Draw a labeled diagram that explains radioactive decay.
  16. 16. Exit Slip 1.  Which of the following is the correct symbol for a particle? a.  42He b.  24He c.  0-1e d.  00
  17. 17. Exit Slip 2.  What happens to the nucleus of an atom when it undergoes alpha decay? a.  The composition of the nucleus does not change because it only releases energy b.  The nucleus loses two protons and transforms into a new element due to the change in atomic number c.  The nucleus loses two neutrons and transforms into a new element due to the change in atomic mass d.  The nucleus loses an electron and does not change it’s identity
  18. 18. Exit Slip 3.  The transformation of thorium-234 to protactinium-234 is an example of a.  alpha decay. b.  beta decay. c.  gamma decay. d.  none of the above.
  19. 19. Exit Slip 4.  Which of the following correctly represents the alpha decay of Polonium-214?
  20. 20. Exit Slip 5.  Which of the following is the daughter product for the beta decay of Uranium-236? a.  23292U b.  23290Th c.  23692U d.  23693Np
  21. 21. Homework   Read Pg.654 & 656   In your own words, define fission and fusion

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