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10 Cards in this Set

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