Physical Chemistry Lecture 1

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physical chemistry
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study of underlying physical principles that govern the properties and behaviors of chemical systems
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thermodynamics, kinetics, quantum, statistical mechanics
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subcategories of p. chem
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thermodynamics
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transformation of energy from one form to another
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1st law
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statement about quantity of energy involved in transformation
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2nd law
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deals with dispersal of energy
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kinetics
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deals with speed of transformation
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statistical mechanics
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links macroscopic to bulk
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pressure, volume, temperature, molecules
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variables in equations of state
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0th law
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two systems that are in equilibrium with a third system will be in thermal equilibrium with one another
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molar mass
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amount of moles of a substance
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pressure and temperature
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2 intensive properties
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intensive property
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depends on the type of matter, not the amount of matter
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extensive property
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depends on the amount of matter
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volume and mass
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2 extensive properties
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isotherm
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represents changes of volume or pressure under constant temperature
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isobar
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differ in atomic number but have same mass number; line connnecting places with equal barometric pressure
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dalton’s law
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in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases
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compression factor
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described the deviation of a real gas from ideal gas behavior

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