Fizz is a sound often associated with the release of gas from a liquid, commonly heard when opening a carbonated beverage like soda or sparkling water. This sound occurs as carbon dioxide bubbles escape from the liquid, creating a hissing or bubbling noise. The fizzing sound can also be produced in other contexts, such as when a substance reacts with an acid, releasing gas. In scientific terms, fizzing indicates a chemical reaction, often involving acids and bases, where gas is a byproduct. This sound is a key indicator of effervescence in various liquids.