Final answer:
False. The claim that products and reactants in a chemical reaction have different atoms is false; they have the same atoms rearranged as no atoms are created or destroyed, according to the law of conservation of mass.
Step-by-step explanation:
The statement that the products and reactants of a chemical reaction have different atoms is false. Chemical reactions involve the reorganization of atoms from the reactants to form the products, but the atoms themselves do not change. According to the law of conservation of mass, matter cannot be created or destroyed in a chemical reaction, meaning that all the atoms that were present in the reactants will be present in the products. This also implies that in a balanced chemical equation, the number and type of atoms on the reactant side must equal the number and type on the product side, ensuring mass is conserved.