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Published byJordan Powell Modified over 9 years ago
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Nuclear Reactions Fission and Fusion
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FISSION The splitting of an atomic nucleus into 2 smaller particles. Animation
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All nuclei with 83 or more protons are unstable.
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FISSION
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During fission tremendous amounts of ENERGY are produced from very small amounts of MASS.
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Chain Reaction Neutrons released during the splitting of the first nucleus trigger many more nuclear fissions.
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Critical Mass The SMALLEST possible mass of fissionable material that can sustain a chain reaction.
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Controlled reactions Occur in nuclear power plants Animation
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Uncontrolled reactions Occur in atomic bombs Animation
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FUSION The process of COMBINING two smaller nuclei into ONE larger nucleus.
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FUSION
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This process losses even more mass than FISSION, and therefore releases more ENERGY.
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At the present time, this means that very high temperatures are required for fusion to occur. Animation
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SIMILARITIES between fission and fusion Both are nuclear reactions (involve the nuclei of atoms) Both convert a very small amount of mass into an extremely large amount of ENERGY.
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DIFFERENCES BETWEEN FISSION AND FUSION
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FISSION Involves splitting atoms (One becomes two) Is currently possible
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FUSION Involves fusing atoms (joining two and making one) Requires extremely high temperatures Not currently possible
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