https://doi.org/10.1351/goldbook.C01033
A process that results in the interconversion of @CT01038@. Chemical reactions may be @E02035@ or @S05970@. (It should be noted that this definition includes experimentally observable interconversions of conformers.) Detectable chemical reactions normally involve sets of @M03986@ as indicated by this definition, but it is often conceptually convenient to use the term also for changes involving single molecular entities (i.e. 'microscopic chemical events').
See also:
identity reaction
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1096 [Terms] [Paper]