the mass of the reactants of a chemical reaction equals to the products of the chemical reaction
mass_chemical_reaction is mass_chemical_interaction. product is chemical. mass_chemical_reaction is not group_of_chemical_reactions. mass_chemical_reaction is not mass_chemical_interaction. reactant is not chemical. reactant is chemical. mass_chemical_reaction is group_of_chemical_reactions. chemical_decomposition is chemical_reaction. propionate is chemical_compound. hydrophilic_chemical_object is chemical_object.