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Published byDarrell Fletcher Modified over 9 years ago
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Uses of Nuclear Chemistry
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Fission & Fusion Fission: the splitting of a nucleus into many pieces large release of energy Nuclear reactors Fusion: the combining of nuclei (bind two or more light and less stable nuclei to form a single, more stable nucleus) Stars Nuclear reactions can happen naturally, but they can take long periods of time (about 4.5 billion years)
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Nuclear Reactors Used to generate electricity Uranium-235 is used (a certain amount required to sustain a chain reaction) Other metals are used to absorb “extras” during the reaction These metals must be serviced regularly Some of the materials become radioactive and cannot be reused
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How Nuclear Reactors Work: http://www.youtube.com/watch?v=b4Q9O1vICWs
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Nuclear Waste Where do we store it? Any problems with this?
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Japan’s Meltdown http://www.youtube.com/watch?v=JMaEjEWL6PU https://www.youtube.com/watch?v=nQ6lCR71Yik
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Uses of Radiation Medicine Radiotracer- emits non-ionizing radiation to detect a specific element
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Radiation Exposure Accumulated Doses Measured in units called rem: measures doses of radiation while accounting for energy of radiation, type of living tissue absorbing radiation and time of exposure. Natural background: you are exposed to radiation on a regular basis (150mrem/yr) This radiation comes from sources such as cosmic radiation, the ground, buildings, air, inside human body, medical and dental x-rays, nuclear weapon testing, air travel Detection: Film badges
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Food Preservation Irradiate food to kill microorganisms
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http://www.weather.com/news/science/environment/fuk ushima-power-plant-leak-20140220 http://www.weather.com/news/science/environment/fuk ushima-power-plant-leak-20140220
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