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  • Created by: carys ☺
  • Created on: 14-05-13 15:16

1. What is the equation for the second ionisation of oxygen?

  • O+ (g) -> O2+ (g) + e-
  • O+ (l) -> O2+ (g) + e- (s)
  • O2+ (g) -> O3+ (g) + e-
  • O2- (g) -> O2+ (g) + H2O
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2. What are three characteristics that ionic compounds have (when in a giant ionic structure)?

  • always conducts electricity, low boiling point, cannot dissolve in water
  • high boiling point, always conducts electricity and cannot dissolve in water
  • conduct electricity when molten or dissolved, have high boiling points, dissolve in water
  • dissolve in water, low boiling point, can not conduct electricity

3. What charge does the Sulfate SO4 ion carry?

  • 4+
  • 2+
  • 2-
  • 4-

4. How do the delocalised electrons in metallic bonding effect the melting point?

  • The more electrons there are, the stronger the bonding will be and the higher the meling point because the positive metal ions will have more electrons to be attracted to
  • Because the shared pair of electrons create a strong intermolecular force
  • They make the melting point lower because it stops the positive ions being attracted togther
  • They make the bonding between atoms weaker

5. What are Van Der Waals Forces?

  • electrostatic attraction between temporary dipoles and induced dipoles caused by movement of electrons in atoms and molecules.
  • shared pair of electrons
  • any intermolecular force
  • ionic attraction


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