Structural Isomerism

Question 1

There are three different types of structural isomerism:

Answer 1

Chain isomerism
Positional isomerism
Functional group isomerism

Question 2

Structural isomers are compounds that

Answer 2

have the same molecular formula but different structural formulae
E.g. propene and cyclopropane

Question 3

Chain isomerism is when compounds have

Answer 3

the same molecular formula, but their longest hydrocarbon chain is not the same

This is caused by branching
E.g. pentane and 2,2-dimethylpropane

Question 4

Positional isomers arise from differences in the position of a

Answer 4

functional group in each isomer

The functional group can be located on different carbons
For example, butan-1-ol and butan-2-ol

Question 5

When different functional groups result in the same molecular formula, ……………. arise

Answer 5

functional group isomers

Question 6

The isomers have very different chemical properties as they have

Answer 6

different functional groups

For example, butanol and ethoxyethane