This will probably brand me as the uncontested, all-knowing, chemistry nerd overlord of the world, but here are a couple of jokes that I found humorous…enjoy.
Outside his buckyball home, one molecule overheard another molecule saying, “I’m positive that a free electron once stripped me of an electron after he lepton me. You gotta keep your ion them.”

A chemistry professor couldn’t resist interjecting a little philosophy into a class lecture. He interrupted his discussion on balancing chemical equations, saying, “Remember, if you’re not part of the solution, you’re part of the precipitate!”

 One day on the Tonight Show, Jay Leno showed a classified add that read: “Do you have mole problems? If so, call Avogadro at 602-1023.”

Q: Why do chemists call helium, curium and barium the medical elements?
A: Because if you can’t helium or curium, you barium!