Isomerism
/aɪˈsɑːmərɪzəm/
Definition 1 of 1
Pro Tip 1/3Chemistry Context
Isomerism is primarily used in chemical contexts to discuss molecules with the same formula but different structures. 
The study of isomerism can reveal why two substances with identical molecular formulas have distinct smells.
Pro Tip 2/3Different Properties
Even though isomers have the same atoms, their arrangement can give them quite different properties. 
Due to isomerism, butane and isobutane have different boiling points.
Pro Tip 3/3Types of Isomerism
Remember that isomerism has types - structural isomerism involves different connections, stereoisomerism involves different 3D arrangements. 
Structural isomerism is a simpler concept than stereoisomerism, which includes enantiomers.