why do bubbles in carbonated drinks appear out of nowhere and always start at the bottom of a glass?
In: Chemistry
When the container is closed, its contents are under pressure and most of the carbon dioxide (CO2) is dissolved into the liquid just like salt dissolves in water.
When you open the container, the pressure is released. CO2 doesn’t like to stay dissolved to liquids when it’s under normal pressure, so it starts to form bubbles.
The easiest place for the bubbles to form is any spots with irregularities. The sides and bottom of the container have a lot of irregularities, so that’s where most of the bubbles form.
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