Which statement describes a chemical reaction? Reactants form products when atoms change state. Products form reactants when atoms change state. Reactants form products when atoms are rearranged. Products form reactants when atoms are rearranged.

The answer you are looking for is Statement C

In a chemical reaction when the atom of the reactant rearranges, it leads to the formation of product.

Explanation:

Chemical reaction refers to schematic representation of combination of chemicals which leads to the formation of new compound. It has two important factors called reactant and product. The former either dissociates or associates which leads to the formation of latter.

During a chemical reaction, the molecules or the atoms in the reactants adjust themselves and bond together contrastingly to shape new products with unexpected qualities in comparison to the reactants. Thus, statement C is considered as best choice for the given question.