7 - 1 CHM 11500 Lecture 7 Reading is 7.1, 7.2, p 279-280,...

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Unformatted text preview: 1 CHM 11500 Lecture 7 Reading is 7.1, 7.2, p 279-280, p. 287, 8.2, Infrared Spectroscopy p. 343-344 2 Exam 1, Mon. Sept 19, 8:00- 9:00 PM Be there at 7:35 PM Bring your PUID, seat assignment , pencils, approved calculator Calculator: Non-programmable!!!!! Not solar, they do not work well in the second balcony. In your seat by 7:55 PM Cannot leave during first 15 minutes of exam. Hand in your scantron form before leaving. Take your exam paper with you upon leaving. 3 Question #1 Which light wave is of highest energy? 4 Think/Pair/Share Question #2 Which light wave is brightest? 5 Key terms: wavelength, (nm) frequency, (s-1 = Hz) 6 Amplitude (intensity) of a wave Key terms: wavelength amplitude 7 Image of the Atom Nucleus (positive charge) Electrons, e (negative charge) 8 Atomic Line Spectra It has been known since the 1800s that line spectra exist. The spectrum for each element is unique! Atomic spectra 9 What causes the emitted lines? Scientists have proposed that these spectral lines are caused by a process in the atom that involves electrons. How do we know these lines are caused by electronic processes and not a nuclear process? _______________________________________________ 10 Emitted Photons Factor of 10,000 to 100,000 difference in energy! from nuclear decay visible photons 11 Electrons?...
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This note was uploaded on 02/17/2012 for the course CHM 115 taught by Professor Towns during the Fall '08 term at Purdue University-West Lafayette.

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7 - 1 CHM 11500 Lecture 7 Reading is 7.1, 7.2, p 279-280,...

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