Nuclear Fission vs. Fusion and the forces of the nucleus

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Nuclear Fission vs. Fusionand the forces of the
nucleus
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Nuclear Stability- types of forces

• Strong Force attraction between proton and
  neutron
• Repulsive Force protons HATE each other due to
  like charges

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• Describe the forces in a stable nucleus vs. an
  unstable nucleus.

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Nuclear Stability

• The nucleus is stable when
• Strong Force is greater than the Repulsive force
• The nucleus is unstable when
• Repulsive force is greater than strong force
• Nuclear decay starts!! (alpha, beta, gamma)

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Nuclear Fission

• Nucleus splits into 2 or more atoms
• Releases ENERGY and neutron(s)
• Lots of energy from a small amount of mass

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Chain Reaction

• In a power plant the chain reaction is controlled
  so it releases a safe amount of energy
• Nuclear Bombs NO control!!

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Nuclear Fusion

• Needs very high temps (10,000,000 C)
• Produces MORE energy than fission
• Responsible for formation of all the elements in
  the universe and the energy of the sun and stars