Isomerism. SCH4U Spring 2012. Isomerism. Isomerism occurs when there are two or more compounds (called isomers) with the same molecular formula but different arrangements of their atoms Isomers have different physical and chemical properties There are two main classes of isomerism:
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SCH4U Spring 2012
a) structural isomerism
a) Chain isomers
b) Positional isomers
c) Functional groupisomers
What are they?
CH3CH2CH2OH, propan-1-ol H3COCH2CH3 , methoxyethane
a) Geometric (or cis-trans ) isomers
b) Optical isomers