Benzenes

Question 1

Alkane

Answer 1

Hydrocarbon with only single bonds.

Question 2

Alkene

Answer 2

Hydrocarbon with a double bonds

Question 3

Alkyne

Answer 3

Hydrocarbon with a triple bond

Question 4

Arene (Aromatic)

Answer 4

An organic compound with a benzene ring attached

Question 5

Aliphatic

Answer 5

Any organic compound without a benzene ring attached to it

Question 6

Aldehydes

Answer 6

Ends in al and =O on the terminal carbon

Question 7

Ketones

Answer 7

Ends in one and =O not on the terminal carbon

Question 8

Carboxylic acids

Answer 8

Ends in oic acid =O and -OH on the terminal carbon

Question 9

Ester

Answer 9

Two C chains one attached to the COOH and the other to an alcohol/phenol

Question 10

Acyl Chloride

Answer 10

A COOH where the OH is replaced with Cl

Question 11

Arene

Answer 11

Aromatic hydrocarbon containing the benzene ring

Question 12

Phenol

Answer 12

Benzene ring bonded directly to OH

Question 13

Amines

Answer 13

Organic compounds containing N

Question 14

Amide

Answer 14

Have a carbonyl group attached to

Question 15

Structure of Benzene

Answer 15

Planar molecule
each carbon bonded covalently to 2 other carbons and 1 hydrogen
Sideways overlap of p-orbitals.
Leading to delocalised π electron system
above and below plane of molecule

Question 16

Delocalisation energy

Answer 16

the extra extent to which the delocalised structure is stabilised.
It spreads the electron charge over a larger region of space.

Question 17

Why do benzenes undergo electrophilic substitution instead of addition?

Answer 17

Alkenes have greater electron density where benzenes delocalised system would be disturbed