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10 Cards in this Set
- Front
- Back
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spectroscopy
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study of interaction of electromagnetic radiation with matter
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continuous spectrum
line spectrum |
continous: emitted radiation that conatins all frequencies w/in a region of the electromagnetic spectrum
line: produed by excited atoms and has certain frequenceis |
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"white light"
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tiny band of radiation of the total electromagnetic spectrum. 400-800 nm
v,b,g,y,o,r (highest) |
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changing spectrum slit width
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changes observed spectrum
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changing source of light
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changes intensity
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how calibrated spectroscope
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calibrated spectroscope by putting piece of transparent graph paper in the "shuttered" opening
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determine frequencies (with given wavelegnth)
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c=^v to find freq.
E=hv |
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process that removes energy from excited food dye molecults
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thermal collision between dye molecules and water molecules
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dilution equation
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CV=C(f)V(f)
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why a substance absorbs visible light?
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the light absorbed depends on the number of interactions between the photons and absorbing molecults.
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