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12 Cards in this Set
- Front
- Back
From the gold foid experiment, Rutherford concluded that the positive charges in an atom are concentrated in a small, central area that Rutherford called the ____.
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nucleus
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Which subatomic particle has a POSITIVE charge?
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proton
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Which subatomic particle has a NO charge, or a charge of 0?
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neutron
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Which subatomic particle has a NEGATIVE charge?
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electron
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Which subatomic particle is NOT found in the nucleus, but rather in the space outside the nucleus?
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electron
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The ____ number of an element equals the number of protons in the nucleus of the atoms of that element.
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atomic
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The ____ number of an atom is the sum of the protons and neutrons in the nucleus of the atom.
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mass
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Atoms of the same element that have different numbers of neutrons are called ____.
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isotopes
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An ____ is a visual model of the most likely locations for electrons in an atom.
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electron cloud
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The most stable electron configuration is the one in which the electrons are in orbitals with the ____ possible energies.
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lowest
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When all the electrons in an atom have the lowest possible energies, the atom is said to be in its ____.
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ground state
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Which state of electron configuration is more stable: an excited state of the ground state?
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ground state
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