Nuclear Chemistry
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11 Terms
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What is nuclear fusion?
Atoms combining resulting in mass defect
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What is nuclear fission?
Atoms breaking apart resulting in mass defect
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Mass defect?
Small amount of mass getting converted into large amounts of energy
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Radioactivity
Atoms decay from unstableness
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Why are atoms radioactive?
When atoms have too many protons, the repulsive forces overcome the neutron and the neutron splits
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Isotope
Same element, different number of neutrons
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Alpha decay
4/2 He
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Beta decay
0/-1 e
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Positron decay
0/+1 e
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What are half lives
Time it takes for half of isotopes to decay
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Least dangerous to most dangerous radiations
Alpha → beta → gamma
Note 
Flashcards (29)