Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number!

 1944

5  

As an ion chromatography chemist I made this one up: Anions aren't negative, they're just misunderstood.

 1914

1  

Q: What is the chemical formula for "banana"? A: BaNa2

 832

0  

If the Silver Surfer and Iron Man team up, they'd be alloys.

 848

0  

Two chemists go into a restaurant. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" - and he died.

 836

0