Name two types of substances that do not contain molecules with covalent bonds

Answer;

Ionic substances

Single atoms

Explanation;The two substances that do not contain molecules with covalent bonds are ionic substances and single atoms.Ionic substances are those substances that are formed as a result of transfer of electrons from one atom to another, resulting to formation of ions or stable ions. Examples of such ions are sodium chloride, potassium iodide, etc. These compounds do not have molecules with covalent bonds.Single atoms on the other hand do not have molecules with covalent bond since they exist as an atom and not as a molecule. They include elements such as magnesium, sodium,potassium, etc.