Giant Ionic Structures
- Created by: LShahid3
- Created on: 12-09-18 21:35
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- Giant ionic structures
- It takes a lot of energy to break up a giant lattice structure- there are strong ionic bonds to break.
- To separate the ions to have to overcome all the electrostatic forces of attraction in all directions.
- This means that ionic compounds have high melting a boiling points. They are all solids at room temperature.
- Once enough energy is supplied to separate the ions from the lattice, they become mobile- this is when an ionic solid becomes liquid.
- They are attracted to oppositely charged electrodes in the molten compound.
- Therefore, they can carry the electrical charge through the liquid.
- A solid ionic compound cannot conduct electricity when because it's ions are in fixed positions and cannot move- they can only vibrate on the spot.
- They are attracted to oppositely charged electrodes in the molten compound.
- Many ionic compounds dissolve in water and when dissolved, the lattice is split up by water molecules.
- Then, the ions are free to move in the solution formed, they can carry their charge to the opp. electrodes in the solution. Solutions of ionic compounds will also conduct electricity.
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- Then, the ions are free to move in the solution formed, they can carry their charge to the opp. electrodes in the solution. Solutions of ionic compounds will also conduct electricity.
- To separate the ions to have to overcome all the electrostatic forces of attraction in all directions.
- Ionic solid: - ions in fixed position, vibrate but cannot move - it does not conduct electricity
- Molten ionic compound - high temperature gives enough energy to overcome strong attractive forces between ions- ions are free to move around in the molten compound - it does conduct electricity
- Ionic compound in water solution - water molecules separate ion from lattice, makes them free to move around in the solution - does conduct electricity
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- It takes a lot of energy to break up a giant lattice structure- there are strong ionic bonds to break.
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