Lecture on April 9th: Chemical Bonds

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CHEM 101
Julian Tyson

Chemistry 101, Lecture on April 9th Some more chemical principles; bonding and shapes of molecules (important factor in molecular interactions). Chromatography, process for the separation of component of a mixture based on the relative affinities of the components for two phases, one of which moves relative to the other.  Often depends in the polarity of the molecules involved.  The extent to which charge is separated in bonds and the shape of the molecule. Chemists visualize electrons as a cloud of negative charge that can be distributed between atoms according to the relative electronegativities. Bonds are vibrating. The oscillating electric dipole can interact with an external field such as the electrical part of a light beam and extract energy from it by a process of resonance. The frequencies
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