Diamond, Graphite, Fullerenes & Nanoparticles - exam practice
Diamond, Graphite, Fullerenes & Nanoparticles
Question 1 of 6
Diamond and graphite both contain the same element.
What is the name of this element?
Graphite is softer than diamond.
Explain why.
Graphite conducts electricity, but diamond does not.
Explain why.
Different forms of carbon have different uses in the modern world.
The image below shows the structure of diamond and graphite.
Pencils are used for writing because graphite rubs off the pencil onto the paper.
Explain why graphite is used in pencils.
Include information on the bonding and structure in graphite.
Abrasives are hard materials used to wear away the surface of softer materials.
Explain why diamonds are used as abrasives.
Include information on the structure and bonding in diamonds.
A graphene sheet is a single layer of graphite.
Graphene conducts electricity and can be used in loudspeakers and touchscreens.
Use the image above and your own knowledge to explain why graphene is strong.
Use the image above and your own knowledge to explain why graphene can conduct electricity.
How many other atoms does each atom in graphene bond to?
Suggest why a block of graphite, which has a large number of graphene sheets, could not be used for a touchscreen.
Diamond and graphite are both made up of carbon atoms.
The image below shows the structures of diamond and graphite.
Diamond and graphite have very different properties and uses in everyday life.
The different properties of carbon and diamond arise from their different structures.
What property of diamond makes it suitable for use on the cutting end of a drill bit?
Explain why diamond has this property.
Graphite is a good lubricant because it is slippery.
Use the diagram to explain why graphite is slippery.
Diamond is composed of carbon atoms.
The arrangement of the carbon atoms in diamond determines its properties.
The diagram shows the outer electron shells of five carbon atoms in the giant lattice of diamond.
Carbon atom C forms bonds with each of the carbon atoms 1, 2, 3 and 4.
Draw the positions of all the electrons in the outer shells of each of carbon atoms C, 1, 2, 3 and 4.
Explain why diamond has a high melting point.
Explain why graphite is:
- a good electrical conductor
- soft and slippery
Your answer should refer to details of graphite's structure.
Graphite and fullerenes are forms of carbon.
The image below shows a model of a Buckminsterfullerene molecule.
A lubricant is a substance that allows materials to move over each other easily.
Suggest why Buckminsterfullerene is a good lubricant.
Buckminsterfullerene can be used in medicine to move drugs around the body.
Suggest two reasons why Buckminsterfullerene is suitable for this use.
Give one other use of a fullerene such as Buckminsterfullerene.