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Nuclear Chemistry

Nuclear Chemistry. Fission. Fission : Division of a heavy nucleus into two or more smaller nuclei. (Used in weapons and power plants). Fusion. Fusion : Combining two light nuclei . Releases more energy than fission. (Used in weapons. Still working on power plants). Alpha

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Nuclear Chemistry

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  1. Nuclear Chemistry

  2. Fission Fission: Division of a heavy nucleus into two or more smaller nuclei. (Used in weapons and power plants)

  3. Fusion Fusion: Combining two light nuclei. Releases more energy than fission. (Used in weapons. Still working on power plants)

  4. Alpha • Helium Nucleus • Positive charge • Easily stopped • Mass # of atom:-4 • Atomic # of atom: - 2

  5. Beta • Electron (- charge) • Mass # of atom same, • atomic # of atom + 1 0 -1 e

  6. Gamma • High energy electromag. Wave • Mass # of atom same • Atomic # of atom same 0 0 Y

  7. Balancing Nuclear Equations The Mass #s and Atomic #s have to be equal on both sides of the equation.

  8. 234 90 238 92 Th U

  9. Beta Equations 0 -1 e 131 54 Xe

  10. 127 51 0 0 Y Xe + +

  11. Nuclear Radiation – particles and electromagnetic waves that are flung at high speeds from nucleus. Q: Why does it happen? A: Unstable nuclei! Q: Why unstable? A: # of neutrons

  12. Warm Up 9/19 What discovery did the gold foil experiment lead to?

  13. Rutherford’s Gold Foil Experiment • Fired particles at gold foil • Some particles bounced back • Why? Because of the dense central nucleus

  14. Superhero! Your job is to create a superhero that can block that type of radiation. Include all of the information in your folder on your poster.

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