According to the law of conservation of mass, what happens to mass in a chemical reaction?

In a chemical reaction, according to the law of conservation of mass, the total mass of the reactants must equal the total mass of the products. This principle asserts that matter cannot be created or destroyed in a closed system during a chemical reaction. Therefore, when substances undergo a transformation during a reaction, the mass stays consistent throughout the process.

This means that even though the substances may change form and structure, the total quantity of matter before and after the reaction remains the same, exemplifying that mass is conserved. Hence, the statement that mass remains constant during a chemical reaction accurately reflects this fundamental principle of chemistry.