Use the Reactivity Series to help you. Decide whether they are True or False. Aluminium is extracted by electrolysis. For electrolysis to work, the ore must be in a gaseous state. The aluminium oxide is helped to melt by dissolving it in water.
Ions are free to move in the liquid ore.
The electrodes are made out of iron. The positive electrode is called the cathode. The gas produced at the anode is hydrogen. The aluminium metal is collected at the negative electrode. A substance which contains only one type of atom.