module 5 Flashcards
study of heat in motion
thermodynamics
branch of physics that deals with the relationships between heat and other forms of energy
thermodynamics
quantity of fixed mass under investigation
thermodynamic system
everything external to the system
surroundings
interface separating system and surroundings
system boundary
combination of system and surroundings
universe
2 important interactions between the system and its surroundings
heat can cross into the system
work can cross out of the system
3 types of thermodynamic system
closed system
open system
isolated system
the system of fixed mass across the boundary of which no mass transfer can take place
closed system
system across the boundary of which transfer of both mass as well as energy can take place across the boundary
open system
system in which both the mass as well as energy content remains constant
isolated system
a system which is not influenced by its surroundings
isolated system
is thermally isolated from its surroundings; there is no exchange of heat or matter but it is possible for system to do work on its surroundings
adiabatic system
present status of the system described in terms of observable macroscopic properties such as pressure, temperature, volume, and no. of moles
state of the system
characteristics by which the physical condition of the system is described
properties of the system
2 types of system properties
extensive and intensive
depends on the mass or quantity of the system
extensive properties of the system
mass, volume, enthalpy, internal energy, entropy
extensive properties of the system
do not depend on the quantity of matter of the system
intensive properties of the system
freezing point temperature, boiling point, temperature of the system, density
intensive properties of the system
state or condition in which no spontaneous or changes are observed with respect to time
equilibrium
a succession of changes of state
process
constant temperature
isothermal
constant pressure
isobaric
