Abslyut nol harorat

Thermodynamic parameters are physical quantities that uniquely determine the state of a body (a system of bodies).
The pressure is a physical quantity equal to the modulus of the force acting per unit area of ​​the surface of the body perpendicular to it:
The specific volume v is the volume of a substance whose mass is equal to a unit mass:
The temperature T = 0K (on a Celsius scale -273.15 ° C) is called the absolute zero.
The equation of state is the relationship between the three basic parameters of the state of the body.
Thermodynamic process - any change in the state of the body (a system of bodies).
An equilibrium (quasistatic) process is a thermodynamic process in which a body (a system of bodies) passes a continuous series of equilibrium states.
Isoprocesses are the thermodynamic processes occurring in a system with unchanged mass at a constant value of one of the parameters of the state of the system.
An isochoric (isochoric) process is a thermodynamic process that takes place at a constant volume of the system (V = const).
Isobaric (isobaric) is a process in which the pressure is kept constant (p = const).
Isothermal (isothermal) is a thermodynamic process that takes place at a constant temperature (T = const).
An adiabatic (adiabatic) process is a thermodynamic process that takes place in a system without heat exchange with external bodies.
Avogadro's law: at identical pressures and equal temperatures in equal volumes of different gases contains the same number of particles.
The internal energy of a body is energy, which depends only on the thermodynamic state of the body or system of bodies.
Heat transfer is a process of energy transfer, in which a direct exchange of energy between chaotically moving particles of interacting bodies is carried out.
The amount of heat is a measure of the energy transferred in the process of heat exchange.