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20 Cards in this Set
- Front
- Back
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10 half lives=
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no longer radioactive
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Where was Glenn Seaberg's project that provided the Pu-239?
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Hanford, WA
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T/F: Seaberg's part in the Manhattan Project was initiated after attempts to produce fissile U-235 were unsuccessful.
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False
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T/F: Alpha particles can penetrate the skin.
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False
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What was the alpha emitter prevalent in the radioactive fallout from the Chernobyl explosion?
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Sr-90
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Americium undergoes BLANK to produce products with masses close to the element BLANK.
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fission, iron
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Proton? neutron? electron?
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1/1p, 1/0n, 0/-1e
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Who coined the term for radioactivity?
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Curie
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Protium, deuterium and tritium are all examples of...
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isotopes
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What is the charge/ mass of a positron?
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+1e, same mass an electron (0)
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T/F: Curie's isolation of P-30 was the first recorded synthesis of an artificially radioactive substance.
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True
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What did Fermi accomplish earlier than he realized?
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fission in Italy, had to flee to US b/c he had a Jewish wife
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The sun is an example of a
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fusion reactor
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What is critical mass?
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the quantity of fissionable material required for a sustained nuclear reaction
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Positron emission topography detectors detect what kind of emission?
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gamma
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What are the three common hydrogen isotope?
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protium, deuterium, tritium
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What are the only two naturally occurring hydrogen isotopes?
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protium and deuterium
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Protium- #neutrons, #protons, occurrence, %
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no neutrons, 1 proton
most commonly occurring 99% of hydrogen isotopes |
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Deuterium- #neutrons
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1 neutron
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Tritium- how is it made, counted?
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man-made (DNE in nature)
isn't counted in weighted atomic mass |
