Chemistry – Flashcard
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What is the function of shielding in a nuclear reator?
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To contain radiation
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Gamma rays are?
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Electronmagnetic waves
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Among atoms with low atomic numbers, what is the neutron-proton ratio of the most stable nuclei?
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1:1
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Which radioactive nuclide is used to treat cancer?
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Cobalt-60
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Which statement does not describe fission?
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Stable, lightweight nuclei start the process
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The energy released in a nuclear reaction comes from?
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The binding energey of the nucleus
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Radioactive tracers in feetilizers can be used to measure
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How well the fertilizer is absorbed by plants.
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In a nuclear reaction, unstable nuclei change their number of protons and neutrons,
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Give off large amounts of energy, and increase their stability.
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In an artificial transmutation, what is required to bombard nuclei with postively charge alpha particles, protons, and other ions?
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Great quantities of energy
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Which of the following has the greatest penetrating ability?
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Gamma rays
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The half-life of an isotope is the time required for hal the nuclei in a sample to
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Undergo radioactive decay
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A nuclide is identified by
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The number of protons and neutrons in its nucleus
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All radioactive nuclides undergo
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Radioactive decay
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What unit measures radiation damage to human tissue?
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Rad
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Which of the following generally have the lowest penetrating ability?
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Alpha particles
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In nuclear chemistry, an atom is referred to as a
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Nuclide
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Beta particles are
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Electrons
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Alpha particles are
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Helium nuclei
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In nuclear reactors, the role of control rods is to
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Absorb neutrons or slow down the reaction
