a. the random motion of molecules and their collisions with a surface create the observable pressure on that surface.
b. the random motion of molecules explains the diffusion of gases.
c. how to apply the gas laws to relations between the pressure, temperature, and volume of any amount of an ideal gas or any mixture of ideal gases.
d. the values and meanings of standard temperature and pressure (STP).
e. how to convert between Celsius and Kelvin temperature scales.
f. there is no temperature lower than 0 Kelvin.
g.* the kinetic theory of gases relates the absolute temperature of a gas to the average kinetic energy of its molecules or atoms.
h.* how to solve problems using the ideal gas law in the form PV=nRT.
i.* how to apply Dalton's Law of Partial Pressures to describe the composition gases, and Graham's Law to describe diffusion of gases.