Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number!
 1985
5  

A proton and a neutron are walking down the street. The proton says, "Wait, I dropped an electron help me look for it." The neutron says "Are you sure?" The proton replies "I'm positive."
 2312
3  

Q: Why do chemists like nitrates so much? A: They're cheaper than day rates.
 508
0  

If the Silver Surfer and Iron Man team up, they'd be alloys.
 872
0  

Q: What did the scientist say when he found 2 isotopes of helium? A: HeHe
 1012
0