noun
effervescence
ef-er-VESS-unts/ˌefərˈvesns/
The bubbling caused by gas escaping from liquid.
The sparkling water shows its effervescence as tiny bubbles rise.

Etymology
The pieces give the image of liquid beginning to boil up. That image underlies the bubbling sense, where escaping gas makes a liquid appear to boil.
In context
This is where the wine gains its signature effervescence, its sole the bubbly character. The second fermentation happens in the bottle.
More examples
- Soda loses its effervescence when left uncovered.
- The tablet produces effervescence as it dissolves in water.
- The champagne's gentle effervescence tickles my tongue.
Forms
effervescence
effervesce verb — To give off bubbles of gas.
effervescent adjective — Producing or releasing bubbles of gas.