MME 314 Exam 1 – Study Guide, Revision Notes, and Practice Questions for
Exam Preparation
closed system - ✔✔also known as control mass. consists of a fixed amount of mass, and no
mass can cross its boundary (no mass can leave or enter, but energy can cross boundary)
isolated system - ✔✔even when energy cannot cross boundary
open system - ✔✔also known as control volume. device that involves mass flow. Both mass
and energy can cross boundary
control surface - ✔✔boundaries of a control volume. can be real or imaginary.
Intensive Properties - ✔✔Independent of the mass of the system. Ex. temp, pressure, density
Extensive Properties - ✔✔Those who's values depend on the mass or extent of the system. Ex.
Total mass and total volume
Thermal Equilibrium - ✔✔temperature is same throughout system
Mechanical Equilibrium - ✔✔no change in pressure at any point of the system with time
Phase Equilibrium - ✔✔when mass of each phase reaches equilibrium level and stays there
Chemical Equilibrium - ✔✔Chemical composition does not change with time
Exam Preparation
closed system - ✔✔also known as control mass. consists of a fixed amount of mass, and no
mass can cross its boundary (no mass can leave or enter, but energy can cross boundary)
isolated system - ✔✔even when energy cannot cross boundary
open system - ✔✔also known as control volume. device that involves mass flow. Both mass
and energy can cross boundary
control surface - ✔✔boundaries of a control volume. can be real or imaginary.
Intensive Properties - ✔✔Independent of the mass of the system. Ex. temp, pressure, density
Extensive Properties - ✔✔Those who's values depend on the mass or extent of the system. Ex.
Total mass and total volume
Thermal Equilibrium - ✔✔temperature is same throughout system
Mechanical Equilibrium - ✔✔no change in pressure at any point of the system with time
Phase Equilibrium - ✔✔when mass of each phase reaches equilibrium level and stays there
Chemical Equilibrium - ✔✔Chemical composition does not change with time
