Who else wants to here more talk about AgI, NH2, CO2, H2O, on sciforums? Physics is so "pure" and abstract. Chem has way more application.
Why no chemistry forum? Quick answer: too few chemistry discussions to justify having one. Even "Earth Science" is marginal on sciforums.
just because it does not have a section, doe not mean you can't talk about it. just bring it up in general science and I doubt the mods will bother you.