Two hydrogen atoms walk into a bar. One says, "I think I've lost an electron." The other says, "Are you sure?" The first says, "Yes, I'm positive..." 823 0
Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number! 1942 5
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. 835 0
As an ion chromatography chemist I made this one up: Anions aren't negative, they're just misunderstood. 1912 1