Carbonated water , also known as sparkling water , fizzy water , seltzer , and water with gas , -LRB- collectively as an aerated beverage -RRB- , is plain water into which carbon dioxide gas has been dissolved , and is the major and defining component of most soft drinks .

Carbonated water , also known as sparkling water , fizzy water , seltzer , and water with gas , is plain water into which carbon dioxide gas has been dissolved .
