Pure carbon can be found as diamond, graphite, fullerenes and graphene. Crude oil is made from hydrocarbons which can be processed to make a variety of fuels and other useful products.
Which of these statements about different forms of carbon is correct?
Graphite and diamond conduct electricity but graphene does not
Graphite and graphene conduct electricity but diamond does not
Graphene and diamond conduct electricity but graphite does not
What is the shape of a nanotube?
How many covalent bonds does each carbon atom in graphite form?
Why is graphene a good conductor of electricity?
It has delocalised electrons that move between its layers
It has ions that are free to move
It has delocalised electrons that are free to move across its surface
Which of these statements best explains why diamond has a high melting point?
It has strong covalent bonds
A large amount of energy is needed to break its strong covalent bonds
A large amount of energy is needed to break its bonds
What is the general formula for an alkane?
What is the name of the alkane with the formula C3H8?
Which of these conditions is required for all types of cracking?
What is the name of the process which separates crude oil into simpler mixtures of hydrocarbon compounds?
Which of these alkanes has the highest boiling point?