zinc chloride and hydrogen gas are new substances
zinc_chloride is not ionic_compound. zinc_chloride is not chemical_compound. zinc_chloride is crystal. zinc_chloride is inorganic_compound. zinc_chloride is chemical_compound. zinc_chloride is ionic_compound. zinc_chloride is strong_electrolyte. hydrogen_chloride is gas. zinc_chloride is not inorganic_compound. zinc_chloride is not crystal.