Electrolysis

4. During electrolysis the _____ must be free to move
5. Any solution will always contain positive hydrogen ions and negative ________ ions.
8. The name of the process where a compound is broken down using electricity
11. The name of the positive electrode
12. In what group of the periodic table do we find an ion with a -1 charge
13. These are in group 7. If one of these in solution, it will always be given off at the anode (positive electrode).
14. The word to describe a substance that has been dissolved in water

1. Negative ions will always be attracted to the electrode with a _______ charge
2. When an ion reaches an electrode it will gain or lose __________ to become neutral
3. In a solution, the metal will always form at the positive electrode if it is less reactve than _____.
4. Only compounds joined by ______ bonding can be split using electrolysis
6. In what group of the periodic table do we find an ion with a +1 charge
7. This is added to aluminium oxide to lower its melting point
9. The name of the negative electrode
10. The word to describe a substance that has been melted