Question

What is meant by a chemical formula?

Answer 1

Chemical formula:

• The chemical formula of a compound means the symbolic representation of the composition of a compound.
• A chemical formula for a molecule is represented by the group of symbols of the elements that constitute the molecule, and the number of atoms of each element present in one molecule.
• For example the chemical formula of calcium is (Ca), copper is (Cu), iron is (Fe), water is( ${\mathrm{H}}_2\mathrm{O}$), sodium chloride is (NaCl ), etc.