161ASpring2010

161ASpring2010 - 1 Physical Chemistry Physical Chemistry...

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Unformatted text preview: 1 Physical Chemistry Physical Chemistry Physical Chemistry Physical Chemistry • The application of the principles and methods of physics and math to problems related to chemistry. • A study of the physical principles underlying chemistry. (How and why materials behave the way they do) he ultimate goal of physical chemistry is to • The ultimate goal of physical chemistry is to describe a mathematical model of all of chemistry. 2 Physical Chemistry Physical Chemistry Physical Chemistry Physical Chemistry • Thermodynamics • Kinetics • Statistical Thermodynamics • Quantum Mechanics • Spectroscopy 3 Roll a ball down a hill Roll a ball down a hill Roll a ball down a hill Roll a ball down a hill If I put a marble at the top of the ramp and let go, what happens? What are the physical principles that govern this? What physics govern what happens spontaneously to a glass of water that we leave outside? 4 Physical Observations Physical Observations Physical Observations Physical Observations • If I leave a glass of water outside, what happens? •In cold weather •Hot weather? •In Dry weather? •In humid weather? •Why do we sweat? •Biological function? •Physical function? •How does it work? •On dry days? (our clothes stay dry) •On humid days? (our clothes are wet) . 5 Thermodynamics Thermodynamics Thermodynamics Thermodynamics • Thermo (heat) dynamics (motion) is the science of how heat is transferred and how heat, work, and energy are interrelated. Thermodynamics evolved during the industrial revolution from the study of heat engines and the attempts to make better engines. Steam Engines convert chemical energy into thermal energy and then into mechanical energy. The fundamental industrial questions were what physical limits were there on the conversion of heat to mechanical work and vice versa? 6 Heat Transfer Heat Transfer Heat Transfer Heat Transfer •If I leave a glass of water outside, how is heat transferred? •In cold weather •Hot weather? •Is heat transferred when we sweat?...
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161ASpring2010 - 1 Physical Chemistry Physical Chemistry...

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