Run, Air Molecule, Run!

My chemistry teacher in high school is fantastic. He has an accent like Forrest Gump and a very dry, understated sense of humor. On one memorable occasion, while discussing the properties of gases, he makes the following statement while seeming to point to a spot on the other side of the room.

Teacher: “That air molecule right there is traveling at about 600 miles per hour.”

Cue twenty-five teenagers turning to look at the molecule.