Why soda bubbles go down?

The soda bubbles rise to the surface of the soda because they are less dense than the soda. As they rise, they release the carbon dioxide gas that was trapped inside them. This causes the bubbles to burst and the carbon dioxide gas to escape into the air.

The reason why the bubbles go down instead of up is because of the surface tension of the soda. Surface tension is the force that causes the surface of a liquid to resist being broken. In the case of soda, the surface tension is caused by the attraction between the molecules of water and the molecules of carbon dioxide.

The surface tension of the soda is strong enough to hold the bubbles together and prevent them from bursting. However, when the bubbles reach the surface of the soda, the surface tension is no longer strong enough to hold them together and the bubbles burst.