the mass of the reactants of a chemical reaction equals to the products of the chemical reaction
mass_chemical_reaction is mass_chemical_interaction. oxidization is chemical_reaction. hydrophilic_chemical_object is chemical_object. reactant is chemical. product is chemical. chemical_compound is chemical_substance. molecule is chemical_object. mass_chemical_reaction is group_of_chemical_reactions. chemical_decomposition is chemical_reaction. propionate is chemical_compound.