Chemistry Jokes

Joke: If alcohol and driving don't mix, why does my car run off of ethanol?

Joke: What's a pessimist's favorite compound?

Joke: Why did the chemist carry solid helium everywhere he went?

Joke: Are you dry ice? Because you are sublime.

Joke: Teacher: If you're not part of the solution, you're part of the-
Chemistry student: Precipitate, I know.