Electrolysis

Today we'll be doing some more theory on Electrolysis. Answer the following in your books:

1. Watch this animation. What does OIL RIG stand for?
2. Explain what happens at the positive and negative electrodes, using the terms 'reduced' and 'oxidised'.
3. if you use Electrolysis with a solution of copper sulfate, what gas is formed at the positive electrode?
4. Give one use for electrolysis:
5. What is electroplating? Briefly explain how it works:
6. What is bauxite? What metal does it contain?
7. How is bauxite purified into aluminium for use in industry? Explain where the electrodes are in the tank, what is produced at each one and the problems involved with doing so.  
8. This video is taken form the link below, and explains what we've been looking at today. Take a look to make sure that you have the points for number 6 correct:
9. Make sure you remember the HOMEWORK, which is finding a video to help you from the link below.