Question

why do bubbles go up in the air​

Answer 1

Answer:

the bubbles will go up in the air by the hottness in temperature

Answer 2

$\huge\tt\color{pink}{A}\color{yellow}{N}\color{orange}{S}\color{green}{W}\color{blue}{E}\color{purple}{R}$

If the molecules of an object are very tightly packed, it has a high density. Because the air trapped inside a bubble is less dense than the air outside the bubble, it's up, up and away! The heavier carbon dioxide in the air around the bubble pushes up on the air trapped inside the bubble and off it goes.