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Thermodynamics Materials Exam 1 Cheat Sheet (DRAFT) by

Exam 1 Material for MSEN 210

This is a draft cheat sheet. It is a work in progress and is not finished yet.


- Don't depend on size of system
- Depend on size of system
- Temper­ature
- Mass
- Pressure
- Entropy
- Chemical Potential
- Volume


First: The internal energy of a system is the sum of the work done on the system and the heat transf­erred
-> Total energy of universe cannot change
-> U = Q + W + W'
-> Enthalpy: H = U + PV



Isolated: No transfer of heat or matter
- will never change thermo­dynamic state once it reaches equili­brium
- Entropy can never decrease, only remain constant or increase
- Internal Energy is always constant
- No work done on or by system

Open: Can exchange both energy and matter with surrou­ndings

Closed: Can transfer work and energy
- Thermo­dynamic state can change after equili­brium is reached


Revers­ible: No entropy produced
- No permanent changes in the universe

Irreve­rsible: Results in dissip­ations, entropy produc­tion, and permanent changes

Adiabatic: No heat transfer
Isobaric: Constant Pressure -> dP = 0
Isochoric: Constant volume -> dV = 0
Isothe­rmal: Constant temper­ature -> dT = 0
Cyclical: Returns system to initial state -> Delta U = 0