demonstrate the understanding of chemical bonds and how they relate to the properties and uses of compounds.?

Answer 1

Because of the nature of ionic and covalent bonds, the materials produced by those bonds tend to have a quite different macroscopic properties.
The atoms of covalent materials are bond tightly to each other in stable molecules , but those molecules are generally not very strongly attracted to other molecules in the material.
On the other hand the ions in ionic materials show strong attractions to other ions in their vicinity. This generally leads to low melting points for covalent solids and high melting points for ionic solids.
IONIC COMPOUNDS ;
1- Crystalline solids
2- High melting and boiling points
3- Conduct electricity when molten
4- Many soluble in water but non in non polar solvents
COVALENT COMPOUNDS
1- Gases , liquids or solids
2- Low melting and boiling point
3- Poor electrical conductors in all phases
4- Many soluble in non polar solvents but non in water

Answer 2

That would mean doing an experiment.