A bubble is simply a pocket of air within a liquid. I would assume they arise due to nucleation phenomenon or possibly hydrophobic interactions.
if you mean 'what actually makes up a bubble' then it is the liquid formation of the product you have used.
baking soda makes it bubble it usally makes everything bubble
Teeth
Topps Company makes Bazooka Bubble Gum
The Nabisco Group Holdings Corp. makes Bubble Yum
there is a pot like thing on the bottom and bubble blower stick thingies dunk in it then the bubble blower stick thingies move up and and air from inside blows and makes bubbles
Sealed air
the softener makes the bubble gum kinda smooth
No it makes bigger bubble
you chew it
hydrogen
A bubble contains a gas (such as air or CO2) that is lighter than the liquid around it (such as water); so the weight of the liquid pulls it down, which pushes the gas up..