Substances that consist of covalent molecules are usually gases or liquids at room temperature. Ionic bonds are formed between a metal and non-metal, for example, sodium chloride. Outer electrons ...

All ionic compounds have a high melting point and boiling point. They conduct when molten or in solution as the ions are free to move. They can be broken down by electrolysis. All covalent network ...

Calcium becomes a +2 ion and each chlorine becomes a -1 ion. The +2 calcium ion and the two -1 chloride ions attract each other and form an ionic bond and the compound calcium chloride. One calcium ...