Chap29--Atoms_excited - Chap 29 Atoms excitations and...

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Chap 29 –  Atoms: excitations and  emissions
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Emission Spectra Continuous Emission Spectrum    Prism Photographic  Film Slit White Light  Source
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Emission Spectra of  Hydrogen Prism Photographic  Film Film Slit Low Density Glowing Hydrogen Gas Discrete Emission Spectrum
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Discrete Absorption Spectrum Absorption Spectra of  Hydrogen Prism Photographic Film Film Slit White Light Source Discrete Emission Spectrum Hydrogen Gas
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The excited atom usually de-excites in about  100 millionth of a second. The subsequent emitted radiation has an  energy that matches that of the orbital change  in the atom.      This emitted radiation gives the characteristic  colors of the element involved. E 1 – E 2 = hf (h = Planck’s constant)
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Helium Hydrogen Oxygen Carbon Spectra of Some Gases Spectra of Some Gases
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2. INCANDESCENCE White light - all colors in  the visible are present.
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