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AP Physics B Chapter 30 Nuclear Chemistry 30-1 Structure and Properties of the Nucleus

AP Physics B Chapter 30 Nuclear Chemistry 30-1 Structure and Properties of the Nucleus. *M p = 1.6726 x 10 -27 kg * M n = 1.6749 x 10 -27 kg *These are called nucleons. *The number of protons in the nucleus is the atomic number….Z *The number of protons plus neutrons …..A

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AP Physics B Chapter 30 Nuclear Chemistry 30-1 Structure and Properties of the Nucleus

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  1. AP Physics B Chapter 30 Nuclear Chemistry30-1 Structure and Properties of the Nucleus *Mp = 1.6726 x 10 -27 kg *Mn = 1.6749 x 10 -27 kg *These are called nucleons. *The number of protons in the nucleus is the atomic number….Z *The number of protons plus neutrons …..A *Isotopes of an atom have the same number of protons but different numbers of neutrons. *We use the isotope mass with the natural abundance to calculate the atomic mass of an atom.

  2. 30-1 cont’d • D=2r=(1.2x 10 -15 m) (A 1/3 ) • *See Example 30-1

  3. 30-2 Binding Energy and Nuclear Forces • See Example 30-2 • *The total binding energy of the nucleus represents the amount of energy that must be put into a nucleus in order to break it apart into its protons and neutrons. • The average binding energy per nucleon is defined as the total binding energy divided by A. • See Example 30-3 30-4

  4. The strong nuclear force is an attractive force that acts between all nucleons- protons and neutrons. • It is a short-range force • Electrical and gravitational forces are long-range forces. • See p 921 for band of stability.

  5. 30-3 Radioactivity • Henri Becquerel (1852-1908) • Marie Curie 1867-1934) • Pierre Curie (1859-1906)

  6. 30-4Alpha Decay See p 923

  7. 30-5 Beta Decay

  8. 30-6 Gamma Decay

  9. HW TXT30A • Page 940 1-4,6,10-12,19-22,28 due Wed BOP

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