Notes
Slide Show
Outline
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Chapter Eleven
  • Nuclear Chemistry
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 How is brain-scans done?
  • CO 11.1
  • Associated with brain-scan technology is the use of small amounts of radioactive substances.
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Marie Curie discovered radium
  • Fig. 11.1
  • Marie Curie, one of the pioneers in the study of radioactivity, is the first person to have been awarded two Nobel Prizes for scientific work.
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Effect of electromagnetic fields on ionization radiation
  • Fig. 11.2
  • The effect of an electromagnetic field on alpha, beta, and gamma radiation.
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What is half-life period?
  • Fig. 11.3
  • After each half-life period, the quantity of material present at the beginning of the period is reduced by half.
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Half-life and decay
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Radioactive decay
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Bombardment reaction
  • Fig. 11.4
  • Ernest Rutherford was the first person to carry out a bombardment reaction.
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Details of radioactive nuclides
  • Table 11.2
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Smoking, lung-cancer & radiation
  • CC 11.1 Tobacco Radioactivity
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Nuclear decay series-uranium-235
  • Fig. 11.6
  • In the U-238 decay series, each nuclide is unstable except Pb-206.
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Ionizing radation
  • Fig. 11.7
  • Ion pair formation.
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Relative penetrability of radiation
  • Fig. 11.8
  • Alpha, beta, and gamma radiation differ in penetrating ability.
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Radiation doses: rems
  • Table 11.3
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Irradiated food safe to eat?
  • CC 11.2
  • Irridated and nonradiated mushrooms
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Radiation exposure
  • Fig. 11.9
  • Film badges are used to determine a person’s exposure to radiation.
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Radiation detection
  • Fig. 11.10
  • Radiation passing through a Geiger counter ionizes one or more gas atoms, producing ion pairs.
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What causes radiation exposure?
  • Fig. 11.11
  • Components of the estimated annual radiation of an average American.
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Testing radon gas
  • CC. 11.3
  • A commercially available kit to test for radon gas in the home.
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Technetium-99 used as radiation source
  • Fig. 11.12
  • Brain scans are obtained using radioactive technetium-99, a laboratory-produced radionuclide.
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Radionuclide used in medicine
  • Table 11.4
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Radionuclide used in medicine
  • Table 11.5
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Cobalt-60 as gamma source
  • Fig. 11.13
  • Cobalt-60 is used as a source of gamma radiation in radiation therapy.
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Fission chain reaction of uranium-235
  • Fig. 11.14
  • A fission chain reaction is caused by further reaction of the neutrons produced during fission.
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Fission bomb
  • Fig. 11.15
  • Enormous amounts of energy are released in the explosion of a nuclear fission bomb.
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Nuclear reactors for energy
  • Fig. 11.16
  • The cooling tower at the Trojan nuclear power plant dominates the landscape. The nuclear reactor is housed in the dome-shaped enclosure.
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Fusion energy: Ultimate source of energy
  • Fig. 11.17
  • The process of nuclear fusion maintains the interior of the sun at the temperature of approximately 15 million degrees.
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Types of nuclear reactions
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Comparing chemical and nuclear reactions
  • Table 11.6