What molecules are inside a bubble within soda pop?

You may have heard soda pop referred to as being "Carbonated"



This refers to the dissolved Carbon dioxide (CO2)What molecules are inside a bubble within soda pop?
Soda is mostly carbonated water, which is plain old water into which carbon dioxide has been dissolved. Water can hold a great deal of CO2 when it's cold, or kept under pressure, but when you pop the lid, causing the pressure to drop to one atmosphere, and warm the soda up, the CO2 can no longer stay in solution, so the CO2 molecules come out of solution anywhere they can.



The bubbles are mostly CO2 with a tiny bit of water vapor and perhaps some of the more volatile flavor molecules (esters for example).