Face it, you are all wrong. It isn't Pop, even though some people like calling it that (and in my opinion, that's perfectly fine) and it isn't called "Soda" for the reasons you may think it is. Soda, Pop, or Soda Pop, was named "Soda" due to it's chief ingredient: Sodium Bicarbonate, which is a soluble, crystalline form of Carbon. Now, they decided "Soda" because it is easier to say "Hand me a soda" than it is to say "Hand me a Sodium Bicarbonate soft drink." Some people started calling it "Pop" because of the popping noise that occurs when a can or bottle is opened, or because of the popping noises that the bubbles make.
In all honesty, I don't care if you say Soda, Pop, or Soda Pop; it really depends on where you grew up, or how informed you are. Please just stop the quarrels; some are funny, but most are just retards being bitches.