What happens to molecules of water when the temperature of water increases?

Question

what happens to the molecules of water when the temperature of water increases?

Answer 1

They start moving around faster and faster, bumping into each other more often.  Eventually the pressure inside the liquid due to their movement will exceed the atmospheric pressure pushing down on them.  When this happens, water is said to boil.

Answer 2

Hydrogen bonding decreases, and with some much temperature the water molecules over come the energy of hydrogen bonding and that is when water begins to boil.  The spread out with increasing temperature.

Answer 3

temperature is basically a measurement of the speed of molecules, so as the temperature increases water molecules move faster; thus they will collide more and produce more heat (if the temperature gets high enough then water will be able to evaporate)

Answer 4

they spread out

Answer 5

We know that at higher temperatures, more H3O+ (hydronium) ions form, making water more acidic from the auto ionization concept

So something must be happening with the bonds.