There is no specific chemistry section on OWL. However, the site does have subject-specific resources that cover a variety of areas, including social science, engineering and medical disciplines. Sites that include information about writing for chemistry and science include AACC, ChemistryViews and Clinical Chemistry.
The subject of chemistry falls into the scientific writing discipline. Scientific writing requires an abstract or summary, a thesis statement addressing the problem, background information about the problem, specific evidence to support findings and all results obtained. All research is shown with appropriate graphs or tables, with citations accompanying all findings. Technical aspects of the writing should be understandable by professionals and laypersons alike.