the fizz will usually come from added sherbet.
The carbonation in fizzy drinks cause them to fizz.
its all the fizz
CO2
Carbon Dioxide
The fizz in the drinks are from carbon dioxide.
Fizz in fizzy drinks is dissolved carbon dioxide (CO2) coming out of solution. That's all that is in fizz.
Fizzy drinks are not fizzy in space as there is no oxygen to fizz the bubbles. The fizz in fizzy drinks is carbon dioxide coming out. In a vacuum the liquid would "boil" because of the water vapour coming out, and would probably freeze because of all the heat removed with it. Oxygen plays no role in this at all.
The noun 'Fizzy Fizz' is a proper noun, the name of a specific pseudonym. (at least a half dozen versions on Facebook).
Zots are sweets from 1970 they are fizzy. <3
So that the fizz doesn't go out .
Carbon dioxide.
That's the carbonation being released from its airtight space. It reacts with the air and that's why the more you open the fizzy drink the less fizz there is.