Watch the following video derived from you tube https://www.youtube.com/watch?v=IzW0jDuEyIg then answer the questions that follow
QUESTIONS
1. State the colour of the copper (II) sulphate before the electrolysis
2. State the observations made when electric current was passed through the solution for ten minutes
3. What do you think happened to the cathode after electrlysis
4. Explain the observations made