Question

What does the formula of a substance tell you?

Answer 1

Chemical formula:

• “The chemical formula of a compound is a symbolic representation of its composition”.
• The chemical formula contains information regarding all the types of elements that are responsible for making up a molecule.
• It tells the number of atoms of the elements in the compound.

Examples:

• The chemical formula of Sodium chloride is $\mathrm{NaCl}$,it contains Sodium and Chlorine atoms.
• The chemical formula of Lithium fluoride is $\mathrm{LiF}$, it is made up of Lithium and Fluorine atoms.