magnesium is flammable
magnesium_hydroxide is chemical_compound. magnesium_nitrate is ionic_compound. magnesium_ion is magnesium_atom. one_of_chemical_elements is not magnesium. magnesium_ion is not magnesium_atom. magnesium_nitrate is not ionic_compound. one_of_chemical_elements is magnesium. magnesium is not metal. magnesium_hydroxide is not chemical_compound. magnesium is metal.