Giant covalent structure Flashcards
What are the properties if a GCS?
- Strong covalent bonds
- Very high melting and boiling points
- Don’t conduct electricity / except graphite
- Aren’t soluble in water
What are diamonds made of?
A network of carbon atoms
How many covalent bonds do diamonds have?
4
What are the properties of diamonds?
- high melting and boiling points
- don’t conduct electricity
- used for cutting tools ( drills ) or jewellery
What is graphite made of ?
Sheets of carbon hexagons
What is graphite made of?
Sheets of carbon hexagons
Do thy have ovalent bods sthrough out the layers?
No
Do thy have covalent bonds throughout the layers?
No
What happens to the layers?
They slide over each other because they have weak intermolecular forces
What is Graphite used for?
Lubricants
Does it have a high or low melting and boiling point?
HIGH
Does it conduct electricity?
Yes
What is Graphene?
1 layer of graphite
True or False; Graphene is a type of fullerene
True
What is graphene made up of?
A sheet of carbon atoms joined in a hexagon
What are fullerenes made up of?
Lots of covalently bonded atoms
What do the fullerenes form?
Spheres and tubes
What shapes are the carbon atoms arranged in?
Pentagons, Hexagons ad Heptagons
What are fullerenes used for?
Caging other molecules by their trapping atoms delivering sd directly to cells in the body.
What is a polymer
Multiple molecules
What is monomere?
A single molecule
