![]() If it does not fit any of those categories, choose "force carrier boson, not a matter particle". For each particle listed below, classify them as a lepton, meson, or baryon. Since the early days of particle physics, many new particles have been discovered which fit into this classification structure. In particle physics (study ofafundamental building blocks of our universe), all particles that make up matter are classified as leptons, mesons, and baryons, whose names were originally chosen according to their masses (electron, a lepton, is about 1800 times lighter than proton, a baryon). High energy is needed to fuse two or more atoms together. Comparatively, less energy is needed to split an atom in a fission reaction. Fusion reactions occur in stars and the sun. Fission reactions do not occur in nature naturally. Fusion reactions release energy only for elements lighter than iron. The energy released during nuclear fusion is several times greater than the energy released during nuclear fission. While fission reactions are exothermic (releases energy), fusion reactions are endothermic (requires energy). While fission reactions are nuclear reactions, fusion reactions are thermal reactions. Both fission and fusion reactions obey the law of conservation of mass. Both fission and fusion reactions can result in release of large amounts of energy, compared to other types of reactions. Fission reaction is more likely to take place with heavier atomic nuclei. Both fission and fusion reactions result in change of elements reacting (transmutation). ![]() Hint Fission reactions power the Sun, while the fusion reactions keep Earth's core warm. Choose all statements below which correctly compare or contrast nuclear fission and fusion.
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