question_answer

  Choose from the following metals to     answer the questions below aluminium,   calcium,   copper,   iron, magnesium, potassium, nickel, zinc. Each metal can be used once, more than once or not at all. Name a metal which (a) is manufactured by the electrolysis of its molten oxide. (b) is used to galvanise iron. (c) is alloyed with zinc to make brass (d) reacts with aqueous copper (II) sulphate to give a pink solid. (e) does not react with cold water.

Answer:

                  (a) Aluminium is manufactured by the electrolysis of its molten oxide                      (1) (b) Zinc, beine more reactive used to galvanise iron.                                                                    (1) (c) Copper is alloyed with zinc to make brass. (1) (d) Iron reacts with aqueous copper (II) sulphate.                                                             (1) (e) Iron reacts with steam, but has no reaction with cold water.                                               (1)