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| an atomic model is a ______ ______ that replicates an object at a convenient scale |
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| ____ model describes a system |
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| an instrument that separates and spreads light into its component frequencies |
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| identifies each element by its characteristic pattern |
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| is an elements fingerprint- a pattern of distinct frequencies of light |
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| which element has a more orderly atomic spectrum than others |
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| what did Johannes Rydberg note? |
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| the sum of the frequencies of two lines often equals the frequency of a third line |
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| when an electron gains potential energy and moves further from the nucleus, a photon of light is _____ |
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| when an electron loses potential energy and moves closer the nucleus, a photon of light is _____ |
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| warm bodies emit radiation in discrete bundles called |
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| energy in each bundle is proportional to |
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| the frequency of radiation |
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| light is not a continuous stream of energy but consists of small discrete quanta of energy, each quantum called |
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| is light a wave, or a stream of particles |
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| it can be both, depending on the experiment |
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| the amount of energy in a photon is directly proportional to |
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| the frequency of light (E-f) |
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| formation of atomic spectra: |
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| the potential energy of an electron depends on its distance from the nucleus |
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| Quantum hypothesis:when an electron in any energy level drops closer to the nucleus, it _____ a photon of light |
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| Quantum hypothesis: each energy level has a principle quantum number n, where n is always an integer. where n=1, it is ____ to the nucleus |
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| electrons can lose only specific amounts of energy equivalent to |
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| the transactions between levels |
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| an atom reaches the lowest energy level called _____. where the electron cant lose more energy and cant move closer to the nucleus |
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| an electrons wave nature explains: |
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| why electrons in an atom are restricted to a particvular energy level |
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