CHEM101 Study Guide - Photon, Windex, Serdes

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Yoram Apelblat

Document Summary

Speed bump by dave coverly textbook sections 7. 3, 7. 4. Reading assignment is to read once, figure out what you know and what you don"t so that you can concentrate on the latter when concepts are covered in class. White light can be broken into its color components by a prism. Classical mechanics is unable to explain discontinuous spectra! Spectral lines are produced when an e moves from one energy level to another energy level. If energy could take continuous values the spectrum would be similar to the visible spectrum. That"s not the case (see top of fig 7. 8 for hydrogen). Energy levels in an atom are not continuous but discrete (quantized). Only transitions between these levels are allowed and observed. Absorption excitation from a lower allowed energy level to a higher allowed energy level. Emission relaxation from a higher allowed energy level to a lower allowed energy level (often to the ground level).