They have: high melting points; solids at room temperature.
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What can ionic compounds do when they are melted or dissolved in water?
Conduct electricity, their ions can then move freely and carry charge through the liquid.
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Why areionic compounds solids at room temperature?
Because they have giant structures in which many strong electrostatic forces hold the ions together.
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Why do ionic compounds have high melting points and high boiling points?
Because they are giant structures in which many strong electrostatic forces hold the ions together and a lot of energy is needed to overcome the ionic bonds to melt the solids.
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What happens to the ions when an ionic compound has been melted?
The ions are free to move and this allows them to carry electrical charge, so the liquids conduct electricity.
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Why do some ionic solids dissolve in water?
Because water molecules can split up the lattice of some ionic solids, the ions are then free to move in the solutions and also conduct electricity.
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Why can ionic compounds conduct electricity when solid?
Because th ions can only vibrate about fixed positions, they cannot move around, therefore the compound must be melted or dissolved in water for the ions to be able to move about freely.
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Why do ionic solids have high melting points?
They have giant structures with strong electrostatic forces that hold the ions together and a lot of energy is needed to overcome the forces.
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Why can ionic substances conduct electricity when molten or when dissolved in water?
The ions can move freely and carry the charge.
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Other cards in this set
Card 2
Front
What can ionic compounds do when they are melted or dissolved in water?
Back
Conduct electricity, their ions can then move freely and carry charge through the liquid.
Card 3
Front
Why areionic compounds solids at room temperature?
Back
Card 4
Front
Why do ionic compounds have high melting points and high boiling points?
Back
Card 5
Front
What happens to the ions when an ionic compound has been melted?
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