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Nuclear Fission and Fusion Nuclear Fission occurs when a large nucleus is impacted by a neutron and splits the nucleus into two or more smaller nuclei. Instructions: In the diagram below, label neutron, neutrons, Uranium-235, and fission products. A B D D C A) _____________________ B) _____________________ C) _____________________ D) _____________________ Nuclear Fusion occurs when two smaller nuclei collide with a large amount of energy to form a single large nucleus. Instructions: In the diagram below, label neutron, Helium, Hydrogen-2, and Hydrogen-3. A C B D A) _____________________ B) _____________________ C) _____________________ D) _____________________ Difference Between Nuclear Fission and Nuclear Fusion Fission Fusion Nuclear Fission and Fusion – Questions Instructions: Identify the following descriptions as either fusion or fission 1. Requires at least two smaller atoms to occurs. ______________ 2. The splitting of a large nucleus into smaller nuclei. ______________ 3. Usually occurs with light elements. ______________ 4. Uranium-235 is struck by a neutron releasing energy. ______________ 5. Usually starts with a heavy element. ______________ 6. Releases the most energy of the nuclear reactions. ______________ 7. Often leads to a chain reaction effect. ______________ 8. Requires at least one heavy nucleus to start. ______________ 9. The source of energy in stars like the sun. ______________ 10. Splits the nucleus into two or more smaller nuclei. ______________