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Worksheet 46: Redox and oxidation numbers . Topic 11: Redox and Electrochemistry

Set A: Terms and definitions Objective: By defining these words, you should become more familiar
with redox related terms and their definitions.

Define, neatly and clearly, the following redox related terms.
1. Redox

2. Oxidation

3. Reduction

4. Oxidized substance

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5. Reduced substance
Need Help? Study Book Use Glossary
6. Oxidizing agent

7. Reducing agent

8. Oxidation number

9. Half-reaction

Set B: Oxidation numbers facts Objective: To test your knowledge of facts related to
oxidation numbers
Fill in the blanks with the correct information related to oxidation numbers.

10. Oxidation number of a substance can be ________ , _______________, or _________________ .
11. In neutral compounds, the sum of all oxidation numbers must equal ________________________.

12. What is the oxidation number of any free element?
13. What is the oxidation number of any Group 1 element in compounds?
14. What is the oxidation number of any Group 2 element in compounds?

15. What is the oxidation number of any Group 13 element in compounds? Need Help? Study Book Pg 261 – 264 Set 1 - 4
16. What is the oxidation number of hydrogen in most compounds?
17. What is the oxidation number of hydrogen in metal hydrides?

18. What is the oxidation number of oxygen in most compounds?
19. What is the oxidation number of oxygen in peroxides?

20. What is the oxidation number of oxygen in a compound with fluorine?
21. What is the oxidation number of a halogen element in most compounds?

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