Oxidation/Reduction Questions??? Please help!

1.) In the reaction 2Ca(s) + I2(g) ---> 2CaI2(s), iodine is....a. reduced, b. electrolyzed, c. synthesized, d. oxidized or e. none of these

2.) In the reaction 2Na(s) + Cl2(g) ---> 2NaCl(s), the sodium is (same options as above)

3.) Look at the following reaction to answer the questions below:

CH4(g) + 2O2(g) ---> 2H2O(g) + CO2(g)

Which species is oxidized?
Which species is the reducing agent?

4. Which of the following are oxidation-reduction reactions?

I. PCl3 + Cl2 ---> PCl5
II. Cu + 2AgNO3 ---> Cu(No3)2 + 2Ag
III. CO2 + 2LiOH ---> Li2CO3 + H2O
IV. FeCl2 + 2NaOH ---> Fe(OH)2 + 2NaCl

5.) In the balanced equation for the following reaction (in acidic solution)
ClO-3 + Fe2+ ---> Cl- + Fe3+, the coefficient of Fe2+ is?

1) Iodine goes from an ox num of 0 to an ox num of -1. This constitutes a gain of electrons aka reduction. Therefore, iodine is a) reduced.
2) Na goes from an ox num of 0 to an ox num of +1. This constitutes a loss of electrons aka oxidation. Therefore Na is oxidized.
3) C goes from -4 to +4. This is a loss of elections aka oxidation. Carbon is oxidized.
The reducing agent is the agent that gets oxidized. Therefore, carbon is the reducing agent.
4) I, II
5) Cl goes from +5 to -1, a gain of 6 electrons.
Fe goes from +2 to +3, a loss of 1 electron. Therefore, the coefficient is 6.