GIANT COVALENT LATTICE STRUCTURES

amybellingham
Mind Map by amybellingham, updated more than 1 year ago
amybellingham
Created by amybellingham about 6 years ago
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Chemistry AQA unit 2 mind map

Resource summary

GIANT COVALENT LATTICE STRUCTURES
  1. DIAMOND
    1. each carbon atom has 4 covalent bonds with four other carbon atoms in ALL DIRECTIONS
      1. very hard
        1. used for drill tips
        2. rigid structure
        3. no delocalised electrons
          1. can't carry electric current
        4. GRAPHITE
          1. each carbon atom has 3 covalent bonds
            1. each carbon atom has one delocalised, free electron
              1. conducts heat and electricity
            2. layers of atoms
              1. slide over each other
                1. soft and slippery
                2. weak intermolecular forces between layers
              2. GENERAL FACTS
                1. no charged ions
                  1. all atoms are bonded to each other by strong covalent bonds
                    1. lots of energy needed to break bonds
                      1. very high melting/boiling points
                  2. SILICA
                    1. giant covalent lattice structure
                      1. lining of furnaces
                        1. very high melting point
                        2. silicon dioxide
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