Beng 130 Lecture 1 & 2

Beng 130 Lecture 1 & 2 - Physical chemistry"Chemistry...

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Physical chemistry: Focus Structure Energetics (Properties) Mechanism Dynamics “Chemistry is the science of bodies, their composition, and their relations to one another” Jons Jakob Berzelius, 1808 Physical chemistry: Principles/Applications in Biological Science Structure Energetics (Properties) Mechanism Dynamics Physical Chemistry: --> applies methods of physics to the study of chemical systems. A chemical system can be studied from either a Microscopic viewpoint: makes explicit use of molecules Macroscopic viewpoint: large scale proportions of matter, volumes pressure composition Without explicit use of molecular concepts. Physical chemistry: Principles/Applications in Biological Science Structure Energetics (Properties) Mechanism Dynamics Physical Chemistry: 4 main areas Thermodynamics - macroscopic science that studies inter-relationships between various equilibrium properties of a system. Quantum Mechanics - microscopic science that studies molecular structure in terms of electrons and nuclei, ‘first principles’ analysis. Statistical Mechanics - macroscopic science of thermodyn. is a consequence of what is happening at the microscopic (molecular) level. Relates the ‘macroscopic’ to the ‘microscopic’ allows calculation of macroscopic thermodynamic properties from molecular properties. Kinetics - Study of rate processes e.g., chemical reactions, diffusion, … the other three areas. Physical chemistry: Principles/Applications in Biological Science Structure Energetics (Properties) Mechanism Dynamics Physical Chemistry: 4 main areas Thermodynamics Quantum Mechanics Statistical Mechanics Kinetics Microscopic Properties masses interactions molecular geometry Macroscopic Properties conformational fluctuations localization of solvent environmental structure free energy
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Physical chemistry: Principles/Applications in Biological Science Structure Energetics (Properties) Mechanism Dynamics Physical Chemistry: Thermodynamics Quantum Mechanics Statistical Mechanics Kinetics Microscopic Properties masses interactions molecular geometry Macroscopic Properties conformational fluctuations localization of solvent environmental structure free energy 1 A 10 A 10 2 A 10 3 A 10 4 A 10 5 A 10 -10 m 10 -9 m 10 -8 m 10 -7 m 10 -6 m 10 -5 m 1 nm 1 P m C-C bond glucose hemoglobin ribosome Resolution limit of light microscope bacterium Red blood ATOMS MOLECULES MACRO- MOLECULES ASSEMBLIES CELL Physical chemistry: Principles/Applications in Biological Science Structure Energetics (Properties) Mechanism Dynamics Physical Chemistry: Thermodynamics Quantum Mechanics Statistical Mechanics Kinetics Microscopic Properties masses interactions molecular geometry Macroscopic Properties conformational fluctuations localization of solvent environmental structure free energy 10 -12 m 10 -9 m 10 -6 m 10 -3 m 1 10 (ps) (ns) (ps) (ms) 1 P m Primary event In vision Time (seconds) Hinge motion
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Beng 130 Lecture 1 & 2 - Physical chemistry"Chemistry...

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