Answer:A word equation uses words to represent the reactants and products in a chemical reaction. A formula equation uses chemical symbols or formulas, but does not reveal the ratios of the products and reactants.
Explanation: example of a word equation: Synthesis, magnesium + chlorine → magnesium chloride.
Example of a formula equation:CH4(g) + O2(g) → CO2(g) + H2O(g)