Isomerism

Question 1

Isomer

Answer 1

Same molecular formula but atoms are arranged in different ways

Question 2

Structural isomer

Answer 2

Same molecular formula, different structural formula, e.g.
Chain isomer
Position isomer
Functional group isomer

Question 3

Stereoisomer

Answer 3

Same molecular formula, different structural formula, e.g.
E/Z isomer
avis-trans isomer

Question 4

Chain isomer

Answer 4

A different carbon chain (same number)

Question 5

Position isomer

Answer 5

Functional group is in a different position

Question 6

Functional group isomer

Answer 6

A different functional group

Question 7

E/Z isomer

Answer 7

Restricted rotation around the carbon to carbon double bond so the different functional groups are fixed in place
Z = zame zide

Question 8

cis-trans isomer

Answer 8

Like E/Z isomerism, but one of the attached groups must be a hydrogen
cis = Z
trans = E