C2 bonding

Ionic bonding
1. between metals and non metals
2. Forms + and - ions
  1. Forms ionic compounds
    1. Giant ionic lattices
      1. Strong electrostatic forces of attraction
        High melting and boiling points
        Can dissolve in water
        ions free to move conduct electricity
Covalent bonding
1. Between 2 non metals
  1. simple molecular substances
    1. weak inter molecular forces between molecules
      1. Very low melting/ boiling points to separates the molecules
        don't conduct electricity no ions so no electrical charge
  2. Giant covalent structures
    1. Examples
      1. Graphite
        good conductor
        3 covalent bonds
        each carbon atom 1 delocalised electron.
        layers free to slide over each over. week intermolecular forces between layers
      2. silicon dioxide
      3. Diamond
        each carbon 4 covalent bonds
        very rigid and strong
    2. Very high melting and boiling points
2. sharing electrons
3. Very strong bonds
Metalic structures
1. Alloys harder than pure metals
  1. different elements have different sizes.
    1. distort layers of metal atoms
2. giant structure
  1. electrons delocalise
    1. allow the layers to slide over each over
    2. electrostatic attraction. positive metal ions + negative electrons
    3. conducts heat + electricity
Isotopes
1. Different atomic forms of the same element. Same number of PROTONS different number of neutrons

Resource summary

	Created by chapel.jacquesel over 8 years ago