Fission is used in fission bombs, or more commonly known as ‘atomic bombs’, whereas fusion is used in hydrogen bombs. Search. Hydrogen bomb is also known as a thermonuclear weapon. The basic difference between nuclear fission and fusion is that in fission reaction, a heavy nucleus splits into two daughter nuclei with the emission of energy, while in nuclear fusion two lighter nuclei combine to form of heavy nuclei. Though the amount of energy generated by the bomb was greater than "Little Boy" used at Hiroshima but caused less damage due to the geographic structure of the city. Fission is a single stage reaction. ... What is an example of fission? A tremendous amount of energy is produced by the fission of heavy elements. An atomic bomb is the early name given to nuclear weapons built to take advantage of Uranium or Plutonium FISSION. A nuclear weapon (also called an atom bomb, nuke, atomic bomb, nuclear warhead, A-bomb, or nuclear bomb) is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or from a combination of fission and fusion reactions (thermonuclear bomb).Both bomb types release large quantities of energy from relatively small amounts of matter. The name A-Bomb was also used, to distinguish them from H-Bombs, or thermonuclear devices using the FUSION of Hydrogen isotopes. Example: 1 H 2 + 1 H 2 à 2 He 4 + Q (Energy) 1 H 2 representsan isotope of hydrogen called as ‘Deuterium’. Fission releases an enormous amount of energy relative to the material involved. For instance, when one mole of U-235 undergoes fission, the products weigh about 0.2 grams less than the reactants; this “lost” mass is converted into a very large amount of energy, about 1.8 × 10 10 kJ per mole of U-235. Start studying Nuclear Fission and Fusion. Nuclear fusion is the exact opposite of fission, it brings together two smaller nuclei to form one bigger nucleus. The power that fuels the sun and the stars is nuclear fusion. The fission process also releases extra neutrons, which can then split additional atoms, resulting in a chain reaction that releases a lot of energy. Fission weapons are commonly referred to as atomic bombs, and fusion weapons are referred to as thermonuclear bombs or, more commonly, hydrogen bombs. The nuclear reaction in which a heavy nucleus breaks into two is called nuclear fission. The atomic bomb depends on the fission reactions. While fission is splitting of a heavy, unstable nucleus into two lighter nuclei, fusion is the process where two light nuclei combine together releasing vast amounts of energy. In nuclear weapons and reactors, neutrons hit unstable nuclei to form smaller atoms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This phenomenon is called Nuclear Fusion. Classified as a thermonuclear device, a hydrogen bomb uses both fission and fusion … This fusion releases 17.6 MeV of energy. An atomic bomb uses either uranium or plutonium and relies on fission, a nuclear reaction in which a nucleus or an atom breaks apart into two pieces. Uncontrolled fission reaction (spontaneous chain reaction) results to atomic bomb. Thermonuclear weapons, or hydrogen bombs, rely on a combination of nuclear fission and nuclear fusion. This energy is considerable; the atomic bomb dropped on Hiroshima in WWII was an example of this process. Fission offers low energy density because energy released per unit nucleon is relatively lower. What is Nuclear Reaction? Chain Reactions; As noted above, nuclear fission is initiated by bombarding the nuclei of large unstable atoms with neutrons which cause nuclei to split releasing more neutrons. 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