Physics Weekly

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Chapter 33: The Atomic Nucleus and Radioactivity
Marymount High School
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Judith S. de Nuño
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Chapter Objectives:

  • Explain the Relation of x-rays and radioactivity
  • Describe the differences and similarities among alpha, beta, and gamma rays
  • Describe the forces that hold the nucleus together.
  • Describe the particles that form the nucleus
  • Describe how the nuclei of isotopes differ
  • Explain the difference between stable and radioactive isotopes.
  • Explain why atoms are radioactive.
  • Define half-life.
  • Describe natural and artificial transmutation of elements.
  • Explain several methods for dating objects.
  • Descxribe the effects of radiation on humans.

Chapter Terms:

  • x-ray
  • alpha particle
  • beta particle
  • gamma ray
  • nucleon
  • quarks
  • isotopes
  • atomic number
  • atomic mass number
  • half-life
  • transmutation

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Chapter Outline Framework:

  • X-Rays and Radioactivity
  • Alpha, Beta, and Gamma Rays
  • The Nucleus
  • Isotopes
  • Why Atoms Are Radioactive
  • Half-Life
    • Radiation Detectives
  • Natural Transmutation of Elements
  • Artificial Transmutation of Elements
  • Radioactive Isotopes
  • Carbon Dating
  • Uranium Dating
  • Effects of radiation on Humans
    • Radiation Damage

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