How come we burp when we drink carbonated drinks?
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With carbonated drinks (and beer), the fizz sensation we get in our mouth comes from Carbon Dioxide gas that gets dissolved into the liquid. (Beer can use nitrogen if not carbon dioxide). The CO2 wants to come out of the liquid, but when it’s under pressure inside a can or bottle, it stays in the liquid. As you open the container and move the drink around (drink it, pour it into something), the CO2 starts coming out of the drink.
Any of the CO2 that hasn’t come out by the time you drink it will come out while it’s in your stomach, and you burp it out.
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