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Spectroscopy

Spectroscopy. Emission Lines, Absorption Lines, Atomic Excitation. Emission Line, without any doppler effect. Emission Line, without any doppler effect. Emission Line, with doppler effect, blue shifted. Two objects are moving apart at great speed. Emission Line, without any doppler effect.

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Spectroscopy

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  1. Spectroscopy Emission Lines, Absorption Lines, Atomic Excitation

  2. Emission Line, without any doppler effect

  3. Emission Line, without any doppler effect Emission Line, with doppler effect, blue shifted. Two objects are moving apart at great speed.

  4. Emission Line, without any doppler effect Emission Line, with doppler effect, red shifted. Two objects are moving together at great speed.

  5. Emission and absorption lines are exact opposites.

  6. Emission Lines are the fingerprint of an element.

  7. Chapter Reivew Self-Test: True or False? 1. Emission spectra are characterized by narrow bright lines of different colors __________ 2. Imagine an emission spectrum produced by a container of hydrogen gas. Changing the amount of hydrogen in the container will change the colors of the lines in the spectrum ____________ 3. In the previous question, changing the gas in the container from hydrogen to helium will change the colors of the lines occurringin the spectrum ________________ 4. An absorption spectrum appears as a continuous spectrum interrupted by aseries of dark lines _______ 5. The wavelengths of the emission lines produced by an element are different from the wavelengths of the absorption lines produced by the same element ____________ 9. The ground state of an atom is that in which the electron is in its lowest energy level (orbital) _______ 10. An electron can have any energy level within an atom so lang as it is above the ground state _______ 11. An atom can remain in an excited state indefintely ______________ 12. More than one element or molecule can have the same emission or absorption spectrum _________

  8. Chapter Reivew Self-Test: Fill in the Blank Blackbody radiation is an example of a ___________________ spectrum. Light behaves as both a _________________ and a ______________________. Protons carry a ______________; electrons carry a _______________ charge. When one or more electrons are stripped from the atom, the atom is said to be _______________. An electron moves to a higher energy level in an atom after it _________ a photon of a specific energy. When an electron moves to a lower energy level in an atom, it ________________ a photon of a specific energy. Review and Discuss Why are gamma rays generally harmful to life forms, but radio waves are harmless?

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