Lab 5 – Emission Spectra Light Waves Wavelength ( ) Red Light – Red Light – Longer...

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Transcript of Lab 5 – Emission Spectra Light Waves Wavelength ( ) Red Light – Red Light – Longer...

  • Lab 5 Emission Spectra

  • Light WavesWavelength ()Red Light Longer Wavelength, Lower EnergyBlue Light Shorter Wavelength, Higher Energy

  • Formation of Emission and Dark Line Spectra

  • Kirchhoffs Laws1. A hot, dense glowing object (a solid or dense gas) emits a continuous spectrum.2. A hot, low-density gas emits light of only certain wavelengthsa bright line spectrum.3. When light having a continuous spectrum passes through a cool gas, dark lines appear in the continuous spectrum.

  • +P234656 nm7000 4000 -eHydrogen Atom1-e-e5-e486 nm434 nm-e410 nm

  • -eHow to Excite an Atom-e1. Absorption of a Photon Hydrogen Atom

  • AluminumOxygenArgonCalciumCarbonHeliumHydrogenIronKryptonMagnesiumNeonNitrogenSulfurSodiumXenon

  • The End