3- Thermal Physics Flashcards
Mole
The amount of any substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons) as there are atoms in 12 grams of pure carbon-12
Kinetic model of an ideal gas assumes that:
collisions between molecules are elastic, and all energy given to gas becomes kinetic energy
Kinetic model of an ideal gas assumes molecules are…
Identical spheres
Specific latent heat (definition)
The amount of energy per unit mass absorbed or released during a change of phase
Specific latent heat (equation)
L=Q/m
Fusion
The change of phase from solid to liquid
Vaporization
The change of phase from liquid to gas
Thermal capacity (definition)
The energy required to raise temperature by 1 K
Thermal capacity (equation)
Q = C∆T
Specific heat capacity (definition)
The energy required to raise a unit mass of a substance by 1 K
Specific heat capacity (equation)
Q = mc∆T
Boyle’s law
pressure x volume = constant
pressure/temperature = constant
Pressure law
Kinetic energy of molecules used to move piston
The temperature of gas decreases on expansion because…
Internal energy
The total potential energy and random kinetic energy of the molecules of the substance.
