Joke #415

Joke: Chemist: You must be exothermic because I'm feeling how hot you are.
Girl: I think you're just endothermic, it's taking all of my energy to just look at you.

Joke: Why can't you ask a chemist to make you a Pb and J sandwich?

Joke: What did the proton say to the other proton?

Joke: What do you call a secret agent compound?

Joke: What's Batman's favorite element?

Joke: Knock knock!
Who's there?
Aldehyde!
Aldehyde who?
...
Must have been a leaving group.