A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Properties of compounds The relative proportions of the elements in a compound are fixed. The components of a compound do not retain their individual properties. Huge energy is needed to separate the components of a compound.
Examples of compounds:
- The chemical formula for the compound water is H 2 0 indicating that 2 atoms of Hydrogen combine with 1 atom of oxygen
- Table salt (NaCl)
- Glucose C 6 H 12 O 6
A non-compound means which does not combine with two elements. Some examples are Br2 which is a diatomic molecule. S8, sulphur, is an octatomic element,