Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Disciplines (hierarchy name)
4. disciplines (concept)
5. [science and related disciplines]
6. science (modern discipline)
7. natural sciences
8. physical sciences
9. chemistry

Anotations

Scope note:

The study of chemical reactions and properties of all the elements and their compounds, with the exception of hydrocarbons; however, usually includes carbides, carbon oxides, metallic carbonates, carbon-sulfur compounds, and carbon-nitrogen compounds.