Giant Covalent Structures And Fullerenes

Question 1

What are property of giant covalent structures?

Answer 1

They have high melting point and boiling points
They don’t contain charged Particles
Aren’t soluble in water
Bonded to each other by strong covalent bonds

Question 2

What is diamond?

Answer 2

Diamond is a network of carbon atoms that form four covalent bonds each
Very strong as it’s a rigid lattice structure
Doesn’t conduct electrons as not free ions

Question 3

What is graphite?

Answer 3

Each carbon atom only forms three covalent bonds, making sheets of carbon arranged in hexagons
No covalent bonds between layers. Layers are slippery , ideal lubricating metal
High melting points
Conducts electricity as it has free electrons

Question 4

What is graphene?

Answer 4

One layer of graphite
Just 1 sheet of carbon atoms in a hexagon shape
2 dimensional

Question 5

What are fullerenes?

Answer 5

Molecules of carbon shaped like closed tuned or hollow balls .
Mainly in hexagons but can be pentagons or heptagons
Can be used to cage other molecules - used to delivers drugs in body
Huge surface areas. Good industrial catalysts.