Why does fizz leaves the drink after some while?

Fizz leaves a drink over time due to a process called degassing. Here are some reasons why fizz dissipates from drinks:

1. Pressure and Carbon Dioxide:

- Carbonated drinks, such as soda or sparkling water, contain dissolved carbon dioxide (CO2) under pressure. When a bottle or can of a carbonated beverage is opened, the pressure is released, allowing the CO2 gas to escape and form bubbles.

2. Temperature:

- Temperature also plays a role in degassing. As a carbonated drink warms up, the CO2 gas becomes more soluble in the liquid, causing the bubbles to shrink and dissolve back into the drink. This is why cold drinks tend to have more fizz than warm drinks.

3. Surface Area:

- The surface area of the drink also affects the rate of degassing. When a carbonated drink is poured into a glass, the increased surface area allows for more CO2 to escape from the liquid, causing the drink to lose its fizz more quickly.

4. Agitation:

- Agitation, such as shaking or stirring a carbonated drink, can speed up the degassing process. This is because agitation creates more bubbles, which increases the surface area of the liquid and allows more CO2 to escape.

5. Storage:

- The way a carbonated drink is stored can also impact fizz retention. Drinks stored in warm environments or exposed to sunlight will lose their fizz more quickly than those kept cool and in a dark place.

To preserve the fizz in carbonated drinks, it's recommended to keep them cold, store them in a sealed container, and avoid shaking or agitating them unnecessarily.