1.1 Atomic Theory
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Last updated 4:08 PM on 9/10/22
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12 Terms
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Nucleus
________ is tiny compared to an atom.
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Aristotle
________: deduced that all matter was made of 4 elements.
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Atoms
________ can be divided into 3 subatomic particles (electron, proton, and neutron)
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Planetary model
________, electrons travel in fixed orbits.
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Element
________: substance that can not be broken down into simpler substances.
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Atom
________: the smallest particle having properties of an element.
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Atoms
________ are separated, combined, rearranged in chemical reactions.
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atom
the smallest particle having properties of an element
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element
substance that cannot be broken down into simpler substances
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Aristotle
deduced that all matter was made of 4 elements
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ex
fire, air, water, and earth
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credited with discovery of
protons and dense nucleus
