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30 Cards in this Set
- Front
- Back
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The nuclear symbol for helium is ^4v2H and is also for |
Alpha particle |
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Which is the highest radiation |
Gamma rays
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The damaging effects of radiation on the body are result of |
The formation of unstable ions or radicals
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The process in which nucleus spontaneously breaks down by emitting radiation is known as |
Radioactive decay |
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A nuclear equation is balanced when |
B. The sum of the mass numbers and the sum of the atomic numbers of the particles and atoms are the same on both sides of the equation |
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In the nuclear equation of a betta emitter |
The new nucleus contains 1 more proton |
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Why is it important that radioisotopes used in diagnostic tests have short half-lives |
This minimizes the harmful side effects of radiation |
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The maximum permissible of radiation for occupational exposure is |
5 rem per year |
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Activity measurements |
Ci or Bq 1 Ci = 3.7 x 10^10 Bq |
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Absorbed |
Rad or Gy 1 Gy = 100 rad |
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Damage |
Rem or Sv 1 Sv = 100 rem |
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The half-life of the radioisotope is |
The time it takes for one half of the sample to decay |
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When an atom of uranium 235 is bombarded with neutrons it splits into smaller nuclei and produces a great amount of energy |
Fission |
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Combine to form a larger nucleus and Release great amount of energy |
Fusion |
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When positron is emitted from a nucleus of an atom the nuclear mass |
Remains the same |
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The octet rule indicates |
Atoms lose gain share valence electrons to have 8 |
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a chemical equation is balanced when |
the number of the atoms of each element is the same in reactants and products |
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which of the following describes an oxidation reaction |
loss of electrons or gain oxygen |
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in an oxi-reduc reaction, the substance reduced always |
shows a gain of electron |
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avogadro number is the number of |
particles in one mole of a substance |
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4.2 x 10^3 iodine 131, B particles, rema |
4 |
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tech-99m. 1.5 ci |
2.8 x 10^11 |
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dosage tech-99m. 280 ci/kg |
18 mCi |
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cerium-141. 10 milli curies |
2.2 mL |
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in ionic compounds, ______ lose their valence electrons to form pos charged _______ |
metals, cations
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the correct fomula for AL and 0 are |
Al.2.O.3. |
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a _____ is the smallest neautral unit of teo or more atoms |
molecule |
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in a covalently bonded molecule the number of electrons that an atom shares with others is usually equal to the number of electrons |
needed to give it a noble gas arrangment |
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the type of compound that uses prefixes are |
covalent bonds |
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the ability og an atom to attract the shared electrons in a covalent bond are |
electronegativity |
