Chemistry Jokes

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

Joke: What is carbon-14's favorite video game?

Joke: Why did the kid wear swim trunks made of francium to the pool party?

Joke: What's the difference between a politician and a chemist?

Joke: Teacher: What is the formula for water?

Johnny: H I J K L M N O.

Teacher: No Johnny, it's H₂O.

Johnny: That's what I said.