Compounds

A compound is a substance made up of different types and numbers of atoms, all chemically bonded together. Examples of compounds are H₂O and NaCl, but not O₂.

Compounds are made up of atoms of more than one type of element

Note: Molecules are simply two or more atoms held together by chemical bonds. Compounds are a specific type of molecule where the atoms are from different elements.

A compound is a substance that consists of 2 or more different types of chemical elements — These different elephants (elements) are bonded together and in a compound.