We can now post problems and notes, and even search for them. Then, we have some users who wrote great chemistry notes, they are Anish Puthuraya, Vishnuram Leonardodavinci, Gabriel Merces, Nicole Ling and Daniel Lim. I made a note to collect their notes(because that time we don't have the search feature). You can check it out here. If more users participate in this project, the Chemistry Section will come true!
To support, you can:
Solve chemistry problems. Just enter "chemistry" in the search bar and you can find many chemistry problems. Don't be afraid if you don't know anything on Chemistry, the problems from the users I mentioned above are based on their notes, so you may refer to it before solving the problem.
Share a note or a problem. You don't have to share advanced notes. As the chemistry section is just getting started, a basic note will do. However, advanced notes are welcome too! Then, post some interesting problem based on your note.
EDIT: Lakshan Dumpa also post many problems on chemistry!