This is for self study. 1. Why don't some molecules react? For example, NH3 + CaCO3 2. Where can I find a good list of standart state enthalpy and entropy values for molecules? My Chem I teacher gave us all a pretty good handout, but that's been a while ago, and I don't know where it is. 3. Why do molecules react in the first place? I understand that molecules react to acheive more stability but that seems incomplete. What else do I need to know in a general sense.