Disciplines and Occupations

Chemistry

A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.

MeSH Record

Classification

MeSH Qualifier

Used as a Subheading

Chemistry is also a MeSH subheading (qualifier Q000737), attached to other headings to focus them on this aspect:

Used with chemicals, biological, and non-biological substances for their composition, structure, characterization, and properties; also used for the chemical composition or content of organs, tissue, tumors, body fluids, organisms, and plants. Excludes chemical analysis and determination of substances for which analysis is used; excludes synthesis for which chemical synthesis is used; excludes isolation and purification of substances for which isolation & purification is used.

Qualifier ID
Q000737
Qualifier Tree
Y03

Indexing annotation

subhead only; includes "chemical structure", "chemical composition", "chemical properties" or "chemical characterization"; includes "chemical composition" or "chemical content" of organs & tissues, organisms & plants; not for chemical analysis or determination ( = /analysis) nor chemical synthesis or manufacture ( = /chemical synthesis) nor chemical isolation or purification ( = /isolation & purification); see MeSH scope note in Introduction; indexing policy: Manual 19.8.15; DF: /chem or /CH

Subheading synonyms

  • chemical characterization
  • chemical composition
  • chemical content
  • chemical properties
  • chemical structure

Qualifier graph

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Related Concepts

Knowledge Graph

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MeSH Record

See Also

MeSH Record

Aspects Covered

12 allowable subheadings

Indexed with the subheadings classification, economics, education, ethics, history, instrumentation, legislation & jurisprudence, methods, organization & administration, standards, statistics & numerical data, trends.

MeSH Record

Indexing Annotation

the discipline (education, history, etc) only; use CHEMICAL PHENOMENA or specifics treed under it for characteristics of chemicals and their reactions; the qualifier / chemistry is available for use with specific anatomical terms, lower organisms and chemicals

MeSH Hierarchy

Tree Number

  1. H01w.181w

AMA Style

References

  1. National Library of Medicine. Chemistry. Medical Subject Headings (MeSH). 2026. Unique ID D002621. http://id.nlm.nih.gov/mesh/2026/D002621
  2. Chemistry. In: Wikipedia. https://en.wikipedia.org/wiki/Chemistry
  3. Chemistry. In: Wikidata. https://www.wikidata.org/wiki/Q2329