A chemical equation uses symbols and formulas to represent the reactants (starting materials) and products (substances formed) of a reaction, along with their stoichiometric coefficients (numbers that indicate the relative amounts of each substance involved).
For example:
Reactants → Products
2H₂ + O₂ → 2H₂O
This equation describes the reaction between two molecules of hydrogen (H₂) and one molecule of oxygen (O₂) to form two molecules of water (H₂O).
