Carbon Structures - Diamonds

Chemistry: Edexcel IGCSE, topic 6.2.10

Diamond

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

Covalent bonds

Covalent bonds

  • Each carbon atom in diamond is bonded to 4 other carbon atoms by strong covalent bonds.
  • This creates a giant covalent structure.
Hard

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 not conduct electricity

Does not conduct electricity

  • Diamond does not conduct electricity because there are no delocalised electrons in the diamond structure.
High melting point

High melting point

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

Test yourself on Carbon Structures - Diamonds

  • Why is diamond used as a cutting tool?

  • Properties of diamond

  • Why does diamond not conduct electricity?

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