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17 Cards in this Set
- Front
- Back
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Radioactivity
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an element with an unstable nuclei because the proton : neutron ration distance from 1:1
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Transmutation
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a change in the nucleus of an atom (not chemical reactions)
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Alpha Decay
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natural decay postive charge He nucleus
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Beta Decay
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natural decay negative charge Nuetron brackes up to make a proton and electron
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Gamma Decay
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natural decay no mass no charge
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Positron Decay
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natural decay posive charge
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Radioisotope
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element that emits radioactivity atomic # grater than 83
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Artifical transmutation
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the nucleus of the radioisotope is forcibly collided with another atom to change the nucleus
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Mass Defect
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the mass that is loss or changed into energy following a muclear reaction
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Binding energy
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the amount of energy released in fusion the greater the loss the greater the stability
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fuel
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uranium 235, plutonium 239
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moderators
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slow down neutrons molten sodium heavy water
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control rods
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control the rate of fisson cadmium boron
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coolants
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the core of the reactor must be cooled water molten sodium heavy water helium carbon dioxide
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shields
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contament vessal around the core
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internal
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made of steel lining
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external
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high density concrete
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