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Unformatted text preview: Ne e Na 22 10 1 22 11 → +-5) What is the difference between nuclear fusion and nuclear fission? In nuclear fusion, small nuclei are combined to form a larger nucleus – this process releases a very large amount of energy, and is the main source of energy in the sun. In nuclear fission, large nuclei break apart to form smaller ones, releasing a large amount of energy. Fission is used in nuclear power plants to generate energy. 6) What is a “mass defect” and why is it important? “Mass defect” refers to the difference between the mass of the nucleons (protons + neutrons) in a nucleus when weighed separately and the mass of the nucleus when it’s put together. This difference is important because this missing mass is converted to energy using E=mc 2 that’s used to hold the nucleus together. 7) Name three uses for nuclear reactions. • Nuclear weapons • Medicine • Nuclear power generation...
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