atomic spectra

atomic spectra - John Warwick Lab AI: Amanda Le Sueur...

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John Warwick Lab AI: Amanda Le Sueur February 16, 2011 Atomic Spectroscopy 1. A gas under low pressure produces a line spectrum. When elements are heated to higher temperatures their electrons move to higher energy levels. This same process also occurs when electricity is run through an element in its gaseous state. Although because atoms always want to be in the lowest possible energy level they give off the excess energy in the form of electromagnetic energy. This electromagnetic energy is usually visible light, ultraviolet light, or infrared light. 2. Different elements have different line spectra because the energy emitted by an atom demonstrates the separation of energy levels found only in that particular atom. An atom can only emit radiation at certain wavelengths, making that line spectra unique. 3. All atoms, molecules or ions do not only emit energy in the visible range. As described in question one above, electromagnetic energy can also be given off in the form of ultraviolet or infrared light. 4.Each unknown salt was identified using the observed line spectra and flame colors of
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This note was uploaded on 10/20/2011 for the course CHEM 201 taught by Professor Staff during the Spring '11 term at Indiana.

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atomic spectra - John Warwick Lab AI: Amanda Le Sueur...

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