Q: Did you hear oxygen went on a date with potassium? A: It went OK.
 1369
0  

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..."
 847
0  

Don't trust atoms, they make up everything.
 559
0  

Q: What is the most important rule in chemistry? A: Never lick the spoon!
 1540
2  

Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number!
 1976
5