Lect+24+Fall+2011

Lect+24+Fall+2011 - 1 Chapter 7 The Fires of Nuclear...

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Unformatted text preview: 10/28/2011 1 Chapter 7: The Fires of Nuclear Fission Nuclear Fission (continued) Oct. 31/2011 Reminder • Group paper • Due Nov. 4, 10 am • 40 points • Turnitin.com ( put group # and topic in title ) • One submission per group; don’t be late! • Bring a hard copy to class; don’t forget to include original annotated bibliography 2 Review: According to the following nuclear equation, I ‐ 131 is a: 1. Alpha emitter γ o 1- 131 54 131 53 e Xe I + + → 3 2. Beta emitted 3. Alpha with accompanying gamma ray 4. Beta with accompanying gamma ray Review: Which of the following isotopes is most likely to be un stable? 1. Neon ‐ 20 2. Oxygen ‐ 16 4 3. Hydrogen ‐ 1 4. Bismuth ‐ 209 5. Boron ‐ 11 10/28/2011 2 Nuclear Radiation Therapy • Can treat some types of cancer/diseases • Ex. Graves disease (hyperactive thyroid) • I ‐ 131 (radioisotope) concentrates in gland and emits radiation to destroy overactive tissue 5 How does I ‐ 131 treatment work? 1. I ‐ 131 partially destroys overactive tissue 2. 1 ‐ 131 totally destroys overactive tissue 3 131 partially destroys healthy tissue...
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Lect+24+Fall+2011 - 1 Chapter 7 The Fires of Nuclear...

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