Answer:
Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio. Compounds are represented by their chemical formula. A chemical formula is a symbolic representation of the proportions of atoms that constitute a particular chemical compound.
Examples of compound and their formula
Compound name | Molecular formula |
Acetic acid | CH3COOH |
Hydrochloric acid | HCl |
Sulfuric acid | H2SO4 |
Ammonia | NH3 |
Nitric acid | HNO3 |
Phosphoric acid | H3PO4 |