Answer:
a. The chemical symbols represent the chemical element and are 1 to 2 letters long.
Example: Er- Erbium
b. The chemical formulas identify each element by it's chemical symbol and indicates the proportionate number of atoms in each element.
Example: Salt- NaCI
c. A chemical equation is the symbolic equation of a chemical reaction in the form of symbols and formulas.
Example: H2+O=H2O (One water molecule)
