p-chem exam 1

terminology

0th Law

defines temperature (T)

1st Law

Defines energy (U)

2nd law

defines entropy (S)

3rd Law

Gives numerical value to entropy

system

the part of the universe that we choose to study

surroundings

the rest of the universe

boundary

the dividing surface between the system and surroundings

reversable

always in equilibrium

irreversible

defines direction of time

adiabatic

no heat transfer between system and surroundings

isobaric

constant pressure

isothermal

constant temperature

kelvin

C+273.15

diabatic

heat exchange between system and surroundings.