week 1 Flashcards
what is thermodynamics
this is defined as the
“science of energy”
what is classical thermodynamics
its the relationship between the bulk properties of matter
not examined under atomic level
what is statistical thermodynamics
this is the relationship between the bulk properties in terms of ‘aggregation atoms’ (unlike classical and nit behavior of individual atoms)
how many laws of thermodynamics are there
0, 1, 2, 3, 4
what is zeroth law of thermodynamics
“if 2 bodies are in thermal equilibrium with a thrid body, they are also in thermal equilibrium with each other”
what is first law of thermodynamics
“energy can be transformed from one form to an other, but quantity remains the same”
what is second law of thermodynamics
“energy has quantity as well as quality”
what is third law of thermodynamics
“no thermodynamic system can reach absolute zero kelvin “ (0 K - 273C)
how should units be converted
from english units (foot, btu) to metric SI (KG, KJ)
1 BTU = 1.055 kJ
what three things does the ‘thermodynamic system’ include
system
surrounding
boundary
what is a system
collection of matter (like: liquid or gas), within a region/boundary
what is a surrounding
this is a masss or region outside the system
what is a boundary
real or imaginary surface that separates the system from its surroundings
what is a closed thermodynamic system
this is a system which consists of a fixed amount of mass, which CANNOT flow across boundary only energy in the form of heat (Q) or work (W) can cross boundary in a closed system
what is a open thermodynamic system, and what is it also known as
here mass CAN flow across the boundary as well as heat and work
this is also known as control volume
what are the six basic properties of a thermodynamic system
pressure volume temperature internal energy enthalpy entropy
what 2 things can properties of thermodynamic be
intensive or extensive properties of system
what is an intensive property
this is a physical property that DO NOT depend on the amount of matter
what is a extensive property
this is a physical property that DO depend on the amount of matter
what is a thermodynamic state
this is a state or condiditon of a thermodynamic system described by a given set of properties (temperature, pressure, volume…) at a given point in the system
