Isomer
Molecules with the same molecular formula but different structural arrangements.
Also: enantiomer · stereoisomer
Definition
Isomers are molecules that share the same molecular formula but differ in the arrangement of their atoms, resulting in different structural or spatial configurations and often different chemical and physical properties. Structural isomers differ in connectivity, while stereoisomers have the same connectivity but different spatial orientations. Isomerism is especially important in organic chemistry and pharmacology.
Example
“Glucose and fructose are both C6H12O6 but are structural isomers with different arrangements; fructose tastes sweeter than glucose and is metabolized differently by the body.”
Usage Examples
- 1
“The team applied isomer best practices to improve their chemistry outcomes significantly.”
- 2
“Understanding isomer is essential for anyone building a career in STEM.”
When & How to Use
Use 'Isomer' when working in Chemistry contexts where isomers are molecules that share the same molecular formula but differ in the arrangement of their atoms, resulting in different structural or spatial configurations and often different chemical and physical properties.
- ▸Applying isomer principles during a chemistry project or initiative
- ▸Explaining isomer to a junior team member or stakeholder unfamiliar with STEM
- ▸Evaluating options or proposals using isomer as a decision-making criterion
Etymology & Origin
The term 'Isomer' derives from professional usage and entered STEM professional usage as the field formalised in the 20th century.
History & Evolution
The concept of isomer has evolved alongside STEM. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of chemistry in the mid-20th century. Today, isomer is a standard part of STEM practice globally.
Synonyms
- structural isomer
- stereoisomer
- geometric isomer
- optical isomer
Images
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Related Terms
- Structural Isomer
- Stereoisomer
- Organic Chemistry
- Chirality