Gap-fill worksheet question Quiz "The Structure and Uses of different forms of CARBON"

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   brush contacts      Buckminster fullerenes      can conduct electricity      catalysts      composite      free electrons      giant covalent      graphite      hard      layers      light and strong      manmade      nanotubes      natural      not conduct electricity      penetrate      range of properties      simple molecular      soft      strong covalent bonds      tiny cylindrical filaments      weak intermolecular forces   
doc b 1. The element carbon can occur in many forms, both ('found in nature') and (synthesised).

2a. Carbon in the form of diamond is a very high melting structure in which millions of atoms are all linked together by .
2b. It does because there are no in its molecular structure.

doc b 3a. The most common form of carbon is , which, although high melting, its crystals are and slippery.
3b. This is because the of carbon atoms can slide over easily because they are only held together by .
3c. This form of carbon because can move through the layers of carbon atoms.
3d. These two properties enable to be used as in dynamos and electric motors.

doc b 4a. There is a form of carbon collectively called .
4b. These carbon molecules may prove useful to speed up chemical reactions or a means of delivering drugs because they can cell walls.

bucky4.gif 5a. Carbon can be formed into called . which are only a few atoms in circumference.
5b. They are used to form materials mixed with to produce a with the right to suit a particular need e.g.extreme sports equipment.