This is a super cool visualization of the gas laws, and helps you picture what exactly happens when we do things like increase the temperature of a gas.  Does require Flash.  Remember…gas particles are like metalheads in a mosh pit.

Here’s a video that explains why the Ideal Gas Law is the only one you REALLY need:

I’ll still give you the other gas laws in your helpful formula section for the exam, so don’t panic, but if you’re comfortable with a little algebra, you really only need to know PV = nRT!