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Radioactivity
Nuclear Fission and Fusion
• Definition: breaking an unstable nucleus into two smaller nuclei
• Basic formulaElement + Neutron → + 3 neutronsSmaller
Element+ energySmaller
Element+
SAME ChangeChange SAME SAMEChange
• Sample Equation:
• Nuclear fission starts a chain reaction because of the extra neutrons that it emits.
• This is the type of reaction used to fuel nuclear power plants
• Definition: two separate nuclei are fused together to make a larger nucleus.
• Basic Formula:
Larger element
→ + energySmaller Element
Smaller Element
+
• Sample Equation: this is the nuclear reaction that is occurring on the sun and other stars to produce the solar energy that we use on the earth
• The massive amount of energy that is released in a hydrogen bomb is the result of the above fusion reaction.
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