T3 - Thermal physics definition Flashcards
Avogadro constant (NA)
the number of atoms in 12g of C-12 (6.02×10^23)
boiling
takes place throughout a liquid and always occurs at the same temperature
Boyle’s Law
at a constant temperature, the pressure of a gas is inversely proportional to its volume
Isothermic
Charles’ Law
at a constant pressure. the volume of a gas is proportional to its temperature (in k)
Isobaric
evaporation
takes place at the surface of a liquid and can happen at all temperature
internal energy
the sum of the total intermolecular potential energy and the total random kinetic energy of the molecules in a substance
Isothermal
Constant temperature
molar mass
the mass of one mole of a substance
mole (m)
the amount of substance that contains the same number of atoms or molecules as the number of atom in 12g of C-12
Pressure Law
at a constant volume, the pressure is proportional to its temperature (in k)
Isovolumetric
specific heat capacity (c)
the amount of energy required to raise the temperature of the unit mass of substance by 1k
▵Q=mc▵T
specific latent heat (L)
the amount of energy per unit mass of a substance absorbed or released during a change of phase (no temp change)
Q=mL
temperature
a measure of the average random kinetic energy of the molecules in a substance
thermal capacity (C)
the amount of energy required to raise the temperature of an object by 1k
▵Q=c▵T
thermal equilibrium
a situation where objects are at the same temperature
