Convalent Substances

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Simple Molecular

  • These are substances made up of small molecules with a strong convalent bonds which have weak forces between them so they can easily be parted.
  • Therefore the melting and boiling points are very low.
  • They do not conduct electricity as there are no ions. 
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Giant Molecular

  • All atoms are bonded together by strong convalent bonds.
  • Main examples are diamond and graphite which are both made only from carbon atoms.
  • The strong bonds means that the substances have very high melting and boiling points.
  • All substances do not conduct electricity, but graphite does. 
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