Thermodynamics Flashcards
Thermal motion
Translation, rotation, vibration of molecules
Temperature
Quantity that describes the state of the body related to is thermal energy. Temperature is the graduation or the degree of thermal energy.
Absolute zero
Temperatures below does not exist
How much is the change in K if the change is 1 Celsius
1 kelvin
1 cal is how many joule?
1 cal = 4.186 J
Heat capacity
The ratio of heat transferred to a body that causes temperature change of one unit.
Thermal expansion
Most bodies expand while getting hotter and shrink while cooling down
Anomalous properties of water
Water shrinks from 0 c to 4 c
Phase transition
Transition of a body from one phase (or state) to another accompanied by changes in its structure and properties.
Possible transitions between the three classical states of matter
Melting (freezing), Tm, boiling Tb, sublimation temperatures, Ts.
These temperatures vary with the ambient pressure
Specific latent heat
The heat absorbed or released during the phase transition of a body divided by the mass of the body.
Amount of substance, v
In chemistry n
Mol
Ideal gas
Gas that consist of point-like particles. No interaction between the particles except for elastic collisions. Describes low-pressure atomic gases well (noble gases)
In an ideal gas the temperature is directly proportional to
The kinetic energy of the particles.
