Name one metal that decomposes boiling water and not cold water

27 An oxide solution of which of the following elements will turn blue litmus red? Calcium sulphur iron sodium. 28 Name a metal that is not attacked by cold water, boiling water or steam. 30 Arrange the following metals in the order of their decreasing chemical activity: magnesium, iron, gold 31 What would you observe when a strip of zinc is dipped in the solution of copper sulphate?