11 mark
Why can graphite conduct electricity?
Graphite has delocalised electrons
Graphite has layers of atoms that can slide over each other
Graphite has a giant structure
Graphite has strong covalent bonds
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2.3 Structure & Bonding of Carbon
21 mark
Diamond is used in drills.
Give one property that make it appropriate for this use.
Strong
Unreactive
Hard
Malleable
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31 mark
Which statement about diamond is correct?
It is a hard substance with a low melting point
Each carbon atom is bonded to three others with strong covalent bonds
It has a giant structure and conducts electricity
It has a high melting point with each carbon bonded to four others
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41 mark
Fullerenes are molecules made of carbon.
Fullerenes are increasingly used as catalysts due to their large surface area.
Give one other use of fullerenes.
Alloys
Lubricants
Polymers
Fuel Cells
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51 mark
The diagram shows the structure of a carbon nanotube.
Which of the following is not a property of carbon nanotubes?
High tensile strength
High melting point
Poor conductor of electricity
Strong covalent bonds
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