Thermodynamics Processes

A thermodynamic process is the succession of states that a system passes through. Processes can be described by any of the following terms:

Cyclic process - a series of processes that results in the system returning to its original state
Reversible process - a process that can be reversed resulting in no change in the system or surroundings
Irreversible process - a process that, if reversed, would result in a change to the system or surroundings
Adiabatic process - a process in which there is no heat transfer across the system boundaries
Isentropic process - a process in which the entropy of the system remains unchanged
Polytropic process - the plot of Log P vs. Log V is a straight line, PVn = constant

Throttling process - a process in which enthalpy is constant h1 = h2, work = 0, and which is adiabatic, Q=0.