Midterm 1 Vocab Flashcards
Region of space bounded by surfaces
Thermodynamic system
Surface of a thermodynamic system
T.S. Boundary
T.S. Where energy but not mass can cross its boundaries
Closed System
T.S. Where mass and energy may cross its boundaries
Open System
T.S. Where neither mass nor energy may cross its boundaries
Isolated System
A property that is independent of system mass
intensive property
a property that is dependent on system mass
extensive property
T.S. that is not able to spontaneously change its state after being isolated
Thermodynamic equilibrium
Condition of a T.S. that is defined by its properties
Thermodynamic state
A path of states that a T.S. passes through as it goes from an initial to a final state
Thermodynamic process
A process where the initial state is identical to the final state
Thermodynamic cycle
A chemically uniform substance
Pure substance
A substance that is in a single phase throughout
Homogeneous Substance
A system where pressure is constant
Isobaric
A system where temperature is constant
Isothermal
A system where volume is constant
Isochoric
State Postulate
The state of a simple compressible substance is completely defined by 2 independent intensive properties
A T.S. in the absence of electrical, magnetic, gravitational, motion, and surface tension effects
Simple Compressible System
Properties that do not depend on each other
Independent Properties
If 2 bodies are in thermal equilibrium with a third body, they are also in equilibrium with each other
0th law of thermodynamics
Mechanical Equilibrium
When there is no change in pressure
Thermal Equilibrium
When there is no change in temperature
Phase Equilibrium
When there is no change in phase
Chemical equilibrium
When there is no chemical change occurring
Thermodynamic analysis on an atomic level that focuses on individual atoms
Microscopic Analysis
Thermodynamic analysis of a substance as a whole using a continuum
Macroscopic Analysis
An area that can keep being divided and divided infinitely with no individual particles
Continuum
Absolute Pressure
Gage pressure + Absolute pressure
