All is in the project. The green is gas, Yellow is solid, Blue is liquid. "Where's my pizza you butterfly I will catch you"
A solid is a matter that has its molecules packed closely together (as in the sim) and has a definite form. A liquid has its molecules packed a little lighter, and fills its container (it takes the shape of it). A gas has its molecules all around the place, and has an indefinite form, thus making it visible only for a short time until it mixes in with the air.