How can you tell if an element has been oxidized or reduced in a reaction?

Related questions

1. What is the oxidation number for oxygen?
2. Why MnO2 is not a peroxide?
3. Is ko2 a peroxide?
4. Is no2 a peroxide?
5. What is the oxidation number of diatomic elements?
6. What is the oxidation number for the elements in Group 7?
7. What order reaction is the decomposition of h2o2?
8. What is the difference between oxidation state and oxidation number?
9. What is the oxidation number for aluminum?
10. Which element has highest oxidation number?

Tags

1. #reactant
2. #number
3. #product
4. #determine
5. #occurs
6. #reaction
7. #equation
8. #oxidized
9. #numbers
10. #decreases
11. #element
12. #negative
13. #electrons
14. #oxidation
15. #reduction
16. #identify
17. #gains
18. #occurred
19. #reduced
20. #redox
21. #becomes
22. #compare