Question

What is a chemical formula?

Answer 1

• A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass.
• A chemical formula is a representation of a substance's molecular composition in terms of the symbols for the elements that make up the molecule.
• For example - The chemical formula of Calcium carbonate is ${\mathrm{CaCO}}_3$, Sodium chloride is $\mathrm{NaCl}$, etc.