Atomic Structure. Physics Quiz – Flashcards
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What is an isotope?
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d. A form of an atom with a different number of neutrons
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In an atom, electrons ____.
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c. travel outside the nucleus
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Neutrons add only ____ to an atom.
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a. mass
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A region in which there is a high probability of finding an electron is called a field.
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F
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What is the atomic number of an element?
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b. The number of protons in a nucleus
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According to modern atomic theory, it is nearly impossible to determine an electron's exact
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b. position
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Bohr improved upon Dalton's atomic theory.
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T
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The nucleus of an atom has a positive electric charge.
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T
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The word atom comes from a Greek word that means "able to duplicate".
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F
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The charge of an electron is
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b. -1
