| Themes > Science > Chemistry > Nuclear Chemistry > Nuclear Reactions > Nuclear Reactions |
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The bombardment of an atomic nucleus with neutrons can result in nuclear fission. On common example of nuclear fission is seen when uranium-235 splits in barium-141 and krypton-92. Uranium-235 can also split into other elements. Other unstable nuclei such as plutonium-239 can split in a variety of ways when struck by a neutron. Like nuclear fission, nuclear fusion has more than one possibility. In nuclear fusion, two smaller nuclei fuse to form a larger nucleus. For example, in the sun three separate fusion reactions take place. As a result of these reactions smaller hydrogen nuclei are fused into large helium nuclei. Complete the following
fission reactions: neutron + uranium-235 à barium-141 + krypton-92 + ________neutrons neutron + uranium-235 à neodymium-152 + ___________ + 4 neutrons neutron + plutonium-239 à __________ + zirconium-97 + 2 neutrons Complete the following fusion reactions: hydrogen-2 + hydrogen-2 à helium-3 + _________ helium-3 + helium-3 à _______ + 2 hydrogen-1 helium-3 + hydrogen-2 à helium-4 + ________ Complete the following decay reactions: uranium-238 à 8 alpha + 6 beta + ________________ thorium-232 à 6 alpha + _________beta + lead-208 thorium-234 à _______ alpha + 4 beta + radon-218 plutonium-240 + electron capture à ________________ |
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