Chemical reactions provide support for the law of conservation of matter because which of the following is true about the atoms of the reactants and products in a chemical reaction? A The atoms in the products have less mass than the reactants but keep the same arrangement. B The number of atoms is the same in both, but their arrangement will be different. C The number of atoms in the products will be greater than the number of atoms in the reactants. D The number of atoms in the products will be fewer than the number of atoms in the reactants.