This teacher-created extension to one of our experiments helps demonstrate the existence of polyatomic ions http://www.vernier.com/innovate/demonstrating-the-existence-of-polyatomic-ions/

RT @VernierST: This teacher-created extension to one of our experiments helps demonstrate the existence of polyatomic ions http://www.vernier.com/innovate/demonstrating-the-existence-of-polyatomic-ions/