Final answer:
The correct chemical reaction format is 'Reactant + Reactant → Product + Product,' as this follows the standard chemical equation convention where reactants are on the left, products on the right, and the arrow indicating the direction of the reaction.
Step-by-step explanation:
The correctly written chemical reaction among the given options is D. Reactant + Reactant → Product + Product. This option aligns with how a chemical reaction is represented, where the reactants are substances that start a chemical reaction and are written on the left-hand side, while the products are new substances formed as a result of the reaction and are written on the right-hand side.
Steps to Write a Chemical Equation:
Identify the reactants and the products in the reaction.
Write their chemical formulae correctly.
Arrange these substances by placing the reactants on the left of the arrow (→) and the products on the right.
For example, the combustion of methane is represented as: CH4 + 2O2 → CO2 + 2H2O. This equation shows that methane (CH4) and oxygen (O2) are reactants that produce carbon dioxide (CO2) and water (H2O) as products.