Question

why do fine bubbles appear on heating water?

Answer 1

We just can't see it. To convert a liquid to a gas via boiling, the liquid must beheated until its vapor pressure equals the atmospheric pressure. ... When this occurs, they form gaseous molecules of water vapor, which float to the surface as bubbles and travel into the air.

Answer 2

Answer:

below

Explanation:

Air bubbles form first, long before heating water reaches its boiling point. Tap water contains dissolved air. As the temperature at the bottom of the pan rises, hidden air is forced out of solution, forming visible bubbles. ... As the water continues to heat, its dissolved air supply dwindles to nearly nothing.