EVERYDAY SCIENCE

Detailed explanation-1: -A formula is like a recipe for a chemical substance. The coefficient in a formula tells the number of atoms of each element present.

Detailed explanation-2: -A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. Water is composed of hydrogen and oxygen in a 2:1 ratio. The chemical formula for water is H2O.

Detailed explanation-3: -The different types of chemical formulas include: molecular, empirical, structural and condensed structural formulas.

Detailed explanation-4: -Chemical formulas are used to describe the types of atoms and their numbers in a molecule or compound. The atoms of each element are represented by one or two different letters. When more than one atom of a specific element is found in a molecule, a subscript is used to indicate this in the chemical formula.