1.Define oxidation and reduction in terms of electron changes.
2. Name a metal wjose oxide coating protects the metal from further attack.
3. What important feature distinguisjes the lead storage battery from the ordinary flashlight battery?
4. What invention made the heart pacemaker into a practical device?
5. What is the name of the process which uses electrical energy to convert low energy substances to high energy substances?
6. Name at least one metal that is produced industrially by electrolysis.
7. What is the source of the electrical energy that is produced by an electrochemical cell?

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