how does boiling create bubbles which wander from bottom to the top of a liquid?

Question

I know that temperature is given by the movement of the atoms in a substance. But why exactly it happens to form bubbles at the boiling point, which are wandering from the bottom to the top e.g in a pan? If they are made of oxygen , isn’t it at some time depleted? Shouldn’t the water then stop boiling?

In: Chemistry

Answer 1

The bubbles are not “air” in the traditional sense, but instead the liquid near the source of the heat is transformed into a gas and that gas then floats to the top – https://youtu.be/ou5aqCxN2E8