# chemical substance

> matter of constant composition best characterized by the entities (molecules, formula units, atoms) it is composed of and characterized by physical properties like density

**Wikidata**: [Q79529](https://www.wikidata.org/wiki/Q79529)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Substance_(chemistry))  
**Source**: https://4ort.xyz/entity/chemical-substance


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. ChEBI
3. Compendium of Chemical Terminology
4. [Lingua Libre](https://lingualibre.fr/wiki/Q214048)
5. Nuovo soggettario
6. Freebase Data Dumps. 2013
7. Integrated Authority File
8. YSO-Wikidata mapping project
9. BabelNet
10. Quora
11. FactGrid
12. National Library of Israel
13. KBpedia
14. GF WordNet