3B - Group 2

    1)           Write balanced chemical reactions, including state symbols for the following:

                    a)  Magnesium burning in air  [2]

                    b)  Calcium in water  [2]

                    c)  Magnesium oxide and hydrochloric acid  [2]

                    d)  Calcium oxide and water  [2]

                    e)  Action of heat on calcium carbonate  [2]

    2)          For 1 (a) - (d) of the reactions above state any observations [6]

                    a)  Magnesium burning in air  [2]

                    b)  Calcium in water  [2]

                    c)  Magnesium oxide and hydrochloric acid  [1]

                    d)  Calcium oxide and water  [1]

    3)          State and explain the trends in pH of the Group 2 hydroxides [3]

    4)          State the trends in the decomposition of the Group 2 carbonates [1]