3.3.10.1 Bonding

Question 1

What is the formula of benzene?

Answer 1

C6H6

Question 2

What flame does benzene burn with?

Answer 2

A sooty flame

Question 3

What is the skeletal structure of benzene?

Answer 3

See card

Question 4

Of double and single bonds, which are stronger?

Answer 4

Single

Question 5

What are arenes?

Answer 5

Carbon rings

Question 6

What is the structure of benzene?

Answer 6

Flat regular hexagon of carbon atoms
4th electron of each carbon is in the pi orbital
These pi orbitals overlap which form a region of electron density above and below the ring

Question 7

What gives benzene it’s stability?

Answer 7

The delocalised electron cloud

Question 8

Why does benzene have a higher melting point than hexane?

Answer 8

The hexagonal molecules pack together well in the solid state which makes them harder to seperate

Question 9

How do you name benzene rings?

Answer 9

(functional groups)benzene

e.g. methylbenzene

Question 10

What does the skeletal structure of benzene look like?

Answer 10

A hexagon with a circle in the middle

Question 11

Why is benzene more stable than cyclohexa-1,3,5-triene?

Answer 11

Because of delocalisation