Unit 2 Concept 3: Nuclear Chemistry
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| Distinguish between a nuclear reaction and a chemical reaction. | nuclear reactions change the nucleus of the atoms
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| Explain the difference between alpha, beta, and gamma radiation. | Alpha: release of an alpha particle from the nucleus
beta: release of a beta particle from the nucleus
Gamma: release of gamma rays from the nucleus
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| Differentiate between the two types of nuclear reactions. Include what happens, where these types of reactions occur, and whether or not they create radioactive waste. | Fission: Splitting of 1 larger atom into 2 or more smaller ones. Creates radioactive waste.
Fusion: combning 2 or more lighter atoms into a larger one. does not make radioactive waste.
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| Write the nuclear equation for Barium-137 undergoing beta decay. | 137Ba56 = 0e-1 + 137La57
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| Write the nuclear equation of Colbalt-54 undergoing alpha decay. | 54Co27 = 4He2 + 50Mn25
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| After an alpha particle is released, the daughter nuclide is Lead-205. Write a balanced nuclear equation | 209Po84 = 4He2 + 205Pb82
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| The half life of Cs-137 is 30.2 years. If the inital mass of the sample is 1000g, how much will remain after 151 years | 31.25g
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| with a half life of 28.8 years, how long will it take 1000mg of strontium-90 to decay to 125 mg | 86.4yr
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| Carbon-14 has a half life of 5730 years. when living, a sample of wood contained 24 g of C-14. Now as a fossilized sample, it contains 1.5g. How old is the sample | 22920yr
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| Nuclear chemistry | The study of changes to the nucleus of an atom
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| Radioactivity | The admition of radiation
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| Radioactive isotopes | have excess nuclear energy and thus are unstable and more likely to decay
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| Radiation | the small particles and rays released during a nuclear reaction
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| Radioactive decay | the spontaneous process by which an unstable nucleus can no longer hold itself together, so it loses energy and matter by emitting radiation
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| half-life | the amount of time it takes for one-half of the radioactive isotope to decay
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| Chain reaction | when something happens to due something else
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| Alpha decay | release of an alpha particle from the nucleus
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| Nuclear fusion | the combining of 2 or more lighter atoms into a larger one
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| Beta decay | release of a beta particle from the nucleus
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| Nuclear Fission | the splitting of 1 larger atom into 2 or more smaller ones.
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