Why did the noble gas cry?
Because all his friends Argon.
What do you do with a dead chemist?
You Ni-tro-gen!
How do chemists laugh?
HeHe
What do you call a man with 6,022 x 10^23 dollars? -- A Moleionaire.
Chemistry joke: Why did the Superman being normal people when a krypton was at him? Because krypton is "stable"