Ionic Compounds occur between non-metals and metals.
They are ions, they have strong bonds, solids at room temperature, they have high melting and boiling points and they conduct electricity when molten or in a solution.
E.g. Sodium Chloride
Simple Covalent Molecules occur between non-metals and non-metals.
The forces between molecules are weak, they are usually liquids and gases at room temperature, they have low melting and…