Carbon Structures - Diamond

Chemistry: AQA GCSE Higher, topic 2.3.11

Diamond

Diamond is an allotrope (form) of carbon. Diamond has the following properties:

Covalent bonds

Covalent bonds

  • Every carbon atom in diamond is bonded to 4 other carbon atoms by strong covalent bonds.
  • This creates a giant covalent structure.
Is diamond hard?

Is diamond hard?

  • There are lots of strong covalent bonds in diamond. This makes it very hard.
  • Because diamond is hard, it is used as a cutting tool to cut other materials.
Does diamond conduct electricity?

Does diamond conduct electricity?

  • Diamond is NOT an electrical conductor because there are no delocalised electrons in the diamond structure.
What is diamond's melting point?

What is diamond's melting point?

  • A lot of energy is needed to break strong covalent bonds.
  • Diamond has lots of strong covalent bonds. This means that diamond has a high melting point.

Test yourself on Carbon Structures - Diamond

  • Why is diamond used as a cutting tool?

  • Choose the correct statement about diamond in each pair

  • Why does diamond not conduct electricity?

  • Diamond contains many strong covalent bonds between its carbon atoms. How would diamond's hardness change if these bonds were much weaker?

  • Choose the correct statement about diamond in each pair

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