Isomerism

Displayed Formular: shows all bonds present in a molecule

Structual Formular: simplified - only shows main bonds

Functional group: 'Foot print' of a type of molercule                                                                                e.g. Alcohols: Oh, Alkenes: C=C, Haloalkanes: a halogen. 

Structual Isomers: Same molecular formula, but different sturcturs

• Chain Isomerism: different arrangments of carbon skeleton e.g. branched
• Position Isomerism: functional group in a different place (e.g. c=c, Br, Cl)
• Functional group Isomerism: different functional group

Sterioismoerism: same structual formular, but the bonds are arranged differently

• E- 2 groups are on opposite sides of the double bond
• Z- 2 groups are on the same side of the double bond