Reactivity series

Use the information in Figure 13 and in Figure 14 to predict the observations for the reactions of magnesium and of iron with dilute hydrochloric acid. (2) magnesium .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... iron .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................

When metals react with acids, hydrogen gas is produced. Describe the test to show that the gas is hydrogen. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................

When magnesium reacts with hydrochloric acid, magnesium chloride and hydrogen are formed. Complete the balanced equation for the reaction. (2) Mg + ..............................................HC l → MgC l 2 + ...............................................

There are three common methods of obtaining metals from the Earth’s crust: • mine the pure metal • mine the metal ore and heat it with carbon • mine the metal ore and electrolyse the molten compound. The method used to obtain a metal is linked to its position in the reactivity series of metals. Aluminium, gold, iron, and silver are some commonly used metals. Use the reactivity series in Figure 13 to state and explain the method chosen to obtain each of these four metals. (6) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ............