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13 Cards in this Set
- Front
- Back
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radius of a nucleus is ___ angstroms
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10^-4
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Protons and neutrons, collectively are called
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nucleons...
held together by the strong nuclear force |
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the strong nuclear force holds together the three___that make up each nucleon
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quarks
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surronding the nucleus at a distance of about ___ to ___ angstroms are electrons
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electrons
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mass of an electron is how many times smaller than the mass of a nucleon.
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1800
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the electron unit "e" is called the
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electronic charge (1 e is equal to 1.6x10^-19 coulombs)
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protons charge and mass
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1+ ... 1.0073
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neutrons charge and mass
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neutral... 1.0087
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electrons charge and mass
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1-... 5.5x10^-4
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_____ are the building blocks of all compounds and cannot be decomposed into simpler substances by chemical means
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elements
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In Elements the A stands for
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mass number
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In Elements the Z stands for
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Atomic Number
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two or more atoms of the same elemetn that contain different numbers of neutrons are said to be
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isotopes
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