2. A/An _____ agent is a substance that has the potential to cause another substance to be oxidized.
a. reducing
b. oxidizing
c. biological
d. chemical

3. What is the oxidation number of sodium?

4. A species whose oxidation number _____ is reduced.
a. increases
b. decreases
c. stays the same
d. is neutral

5. A species whose oxidation number _____ is oxidized.
a. increases
b. decreases
c. stays the same
d. is neutral

6. Redox reactions involve the _____ of electrons.
a. combining
b. sharing
c. substitution
d. transfer

7. What is the oxidation number of fluorine?

8. Reduction involves the _____ of electrons.
a. gain
b. loss
c. displacement
d. bonding

9. Oxidation involves the _____ of electrons.
a. gain
b. loss
c. displacement
d. bonding

10. _____ numbers are based on the distribution of electrons in a molecule.
a. coefficient
b. oxidation
c. electron
d. chemical

11. What is the oxidation number of sodium in NaCl?

12. Determine the oxidation number of each element present
Determine the oxidation number of each element present. Identify what is oxidized and what is reduced.

2NaBr Cl NaCl Br2

13. Determine the oxidation number of each element present
Determine the oxidation number of each element present. Identify what is oxidized and what is reduced.
Fe2O CO Fe CO2

14. Determine the oxidation number of each element present
Determine the oxidation number of each element present. Identify what is oxidized and what is reduced.
NiO H2O Fe Ni(OH) Fe(OH)2

15. Determine the oxidation number of each element present
Determine the oxidation number of each element present. Identify what is oxidized and what is reduced.
NO KMnO MnO KNO3

16. Determine the oxidation number of each element present
Determine the oxidation number of each element present. Identify what is oxidized and what is reduced.
H2SO Mn HCl S MnCl H2O