iron sulfide can be formed by heating a mixture of powdered iron and sulfur
iron_sulfide is inorganic_compound. steam_iron is iron. hydrogen_sulfide is sulfide. sulfide is compound. sulfide_ion is sulfur_atom. if iron occurs then heat occurs. silver_sulfide is chemical_compound. alpha_iron is iron. iron_disulfide is sulfide. iron_iii_sulfate is chemical_compound.