magnesium is a kind of alkaline earth metal
magnesium_hydroxide is chemical_compound. magnesium_hydroxide is not chemical_compound. magnesium is alkaline_earth_metal. calcium is alkaline_earth_metal. one_of_chemical_elements is not magnesium. magnesium is not alkaline_earth_metal. one_of_chemical_elements is magnesium. magnesium is not metal. magnesium_hydroxide is salt. magnesium is metal.