How come that when water boils , air bubbles come to the surface ?

Question

makes me wonder .

Answer 1

As you increase the temperature in the system the water molecules move faster and faster (this is called kinetic energy).  

The moleculus move faster and faster and begin colliding with each other more and more.  Eventually they reach a point that they begin to decompose or separate into Hydrogen and Oxgen  (H2O).  

It is at this point that the water changes state from a liquid to a gas.  This change in state from a liquid to a gas is called vaporization.

Answer 2

As water warms it can hold less and less oxygen, dissolved(that is what the fish breath). Those are the first air bubbles that younsee. As it heats more water vapor begins to evaporate off the surface. Then finally when the boiling point is reached bubbles start coming from all the way through the water and that is boiling. By definition changing from a liquid to a gas all the way through.

Answer 3

water has dissolved oxygen.so when the water is boiled bubbles containing oxygen are formed

Answer 4

Steam, not air.

Answer 5

water bubble appear when you boil water because it turns into gas. Water can be water(liquid), water vapor(gas), and ice(solid). When the water hits 100 degrees Celsius the water begins to turn into vapor. the vapor rises to the top of the pot which results in boiling

Answer 6

When you heat the water, the vapor pressure of water increases.

When the vapor pressure of water equals to the atmospheric pressure, the water boils.

The bubbles are gaseous water or vapor(Water is gas state) it comes out of the liquid to the atmosphere.

Answer 7

Its not air bubbles. That gaseous water vapor.