Concept information
Término preferido
chemical compound (interstellar, circumstellar, or planetary)
Definición
- A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances. In this process, bonds between atoms may be broken and/or new bonds formed. There are four major types of compounds, distinguished by how the constituent atoms are bonded together. Molecular compounds are held together by covalent bonds; ionic compounds are held together by ionic bonds; intermetallic compounds are held together by metallic bonds; coordination complexes are held together by coordinate covalent bonds. Non-stoichiometric compounds form a disputed marginal case. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Chemical_compound)
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URI
http://data.loterre.fr/ark:/67375/MDL-RCJ7CTSV-D
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