Chemistry Ionic Bonding Y10

Why do solid ionic compounds have such high melting and boiling points (temperatures)?

 

A giant ionic structure contains strong forces of electrostatic attraction between oppositely charged ions. These strong forces/ionic bonds require a LOT of energy to break them.

Why do solid ionic compounds NOT conduct electricity?

The ions in the solid giant lattice are fixed in place by the strong electrostatic forces of attraction. They cannot move and so charge cannot flow.

Can you describe how to test if a substance is ionic and what your observations would be from that investigation?

Make an electrical circuit with a power source and a bulb. Dissolve the substances you are testing in some water and see if the solution conducts electricity (the bulb lights up) If it does conduct electricity then the substance IS ionic.

Why can  an ionic substance conduct electricity when melted (molten) or dissolved in water (aq)?

The ions in the solid giant lattice are fixed in place by the strong electrostatic forces of attraction. They cannot move and so charge cannot flow

When the lattice is melted or dissolved in water, the ions are free to move and can carry charge.

Can you draw a 2D diagram of a giant ionic  lattice?