Final answer:
The true statement about a chemical reaction is that all of the atoms in the reactants will be a part of the products, following the law of conservation of mass, where atoms are reorganized but neither created nor destroyed.
Step-by-step explanation:
The question you've asked pertains to the substances involved in a chemical reaction. The accurate statement about a chemical reaction is that all of the atoms in the reactants will be a part of the products. This holds true because chemical reactions adhere to the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. This means the number and types of atoms on the reactants side must match those on the products side of a complete chemical equation. Atoms are neither created nor destroyed; they are just reorganized during the reaction. Moreover, the physical states of compounds (solid, liquid, gas, or aqueous solutions) are indicated in a reaction by symbols such as (s), (l), (g), and (aq), but these states do not determine the products formed. Coefficients may be added in front of chemical formulas to balance equations and ensure that the number of atoms of each element is equal on both the reactant and product sides of the equation. Atoms of different elements react in fixed, whole-number ratios, but their physical states are not determinative of the reaction products.