4.2 Definitions

Question 1

Addition

Answer 1

Joining two or more molecules together to form a larger molecule. Hydration is the addition of a H2O molecule. Halogenation involves the addition of a halogen. Hydrogenation is the addition of H. Electrophilic addition describes all the above examples

Question 2

Aromatic compound/Arene

Answer 2

A compound containing at least one benzene ring.

Question 3

Benzene

Answer 3

A 6 membered carbon ring (C6H6) containing a delocalised pie electron system.

Question 4

Electrophile

Answer 4

An electron pair acceptor

Question 5

Electrophilic substitution

Answer 5

A reaction in which an electrophile replaces an atom/group of atoms in a compound.

Question 6

Friedel-Crafts alkylation

Answer 6

An important synthetic reaction involving an Electrophilic aromatic substitution reaction between benzene, a haloalkane and aluminium chloride

Question 7

Halogenation

Answer 7

A type of reaction that involves the addition of a halogen

Question 8

Mono substituted benzene ring

Answer 8

A benzene ring with one hydrogen replaced by another atom/group of atoms

Question 9

Nitration

Answer 9

A type of reaction that involves the addition of a nitro group.