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Unformatted text preview: CHEM 6BL Experiment 6: Atomic Spectra Instructor: Dr. Sandrine Berniolles Page 1 1 Chemistry 6BL Lab/Course Schedule Chemistry 6BL Lab/Course Schedule Prelab 6 + Ex. 5 In-Lab Report----------- Ex. 6 In- Lab Report End Expt. 5/Start Expt. 6 (Parts I-III) NO LABS on Wed/Th!!! End Expt. 6 (Parts II-V) 1st lab 2 nd lab 1st lab Lecture Holiday----------- Final Exam Nov 24 Dec 1 Prelab & Report Due Dates Lab Schedule Lab Period Lecture & Exam Schedule Date 2 Experiment #6 Experiment #6 : Atomic Spectra : Atomic Spectra z Spectroscopy Hugely important branch of chemistry Analysis of the light emitted or absorbed by substances z Atomic Spectroscopy Spectroscopy applied to atoms 3 Experiment #6 Experiment #6 : Atomic Spectra : Atomic Spectra z Qualitative Data of absorption or emission can be used to identify the element z Quantitative Data ntensity of absorption or emission can be used to determine the amount of element CHEM 6BL Experiment 6: Atomic Spectra Instructor: Dr. Sandrine Berniolles Page 2 4 Electromagnetic Radiation Electromagnetic Radiation z Electromagnetic radiation (e.g. light) oscillates z Frequency ( ) in Hertz (s-1 ): Number of waves passing a given point in 1 s Amplitude Wavelength ( ) Frequency ( ) (waves per unit time) 5 Electromagnetic Radiation Electromagnetic Radiation z Wavelength ( ): distance between two successive crests c = = c/ = c/ (c = 2.998 x 10 8 m/s: speed of electromagnetic radiation)...
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- Spring '08