Why is carbonated water found in drinks?

This site may help you.

http://en.wikipedia.org/wiki/Carbonated_water

I'm sorry, but we were told not to use wikepedia. is there any other site?

Carbonated water, also known as sparkling water or soda water, is an essential ingredient in many drinks due to its unique properties. It is primarily added to beverages for two reasons: to enhance the taste and to create a pleasant sensation in the mouth.

The carbonation process involves dissolving carbon dioxide gas (CO2) under pressure into water. When the carbonated water is released from its container, the dissolved CO2 forms bubbles, giving the drink its characteristic fizz.

1. Taste enhancement: Carbonation can help to enhance the flavor of certain drinks. When CO2 dissolves in water, it creates carbonic acid, which provides a slightly tangy and refreshing taste. This added acidity can balance the sweetness of sugary beverages like sodas, making them more enjoyable to drink.

2. Mouthfeel and sensation: The effervescence caused by carbonation produces a tingling or prickling sensation on the tongue, which many people find pleasurable. The bubbles create a sense of liveliness and make the drink feel more refreshing. This is why carbonated water is often used as a base for cocktails or mixed with fruit juices to create soda drinks.

To create carbonated water, you can use a home soda maker or purchase carbonated water at supermarkets. In a soda maker, you typically fill a bottle with water, insert a CO2 cartridge, and press a button to carbonate the water. The pressurized CO2 dissolves into the water, creating carbonated water. Similarly, store-bought carbonated water is made by dissolving CO2 gas into water under pressure and sealing it in a bottle or can.