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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.

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Presentation on theme: "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."— Presentation transcript:

1 AP Physics B Chapter 30 Nuclear Chemistry 30-1 Structure and Properties of the Nucleus *M p = x kg *M n = x 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 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

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 ( ) Marie Curie ) Pierre Curie ( )

6 30-4Alpha Decay See p 923

7 30-5 Beta Decay

8 30-6 Gamma Decay

9 HW TXT30A Page ,6,10-12,19-22,28 due Wed BOP


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