What happens when you heat the water too much? first it becomes water vapor and then? if too much heat 10000C?

Question

The question comes because in the far future the sun will increase in size and earth will get hoter and hoter and I wanted to know what will eventually happen with the water. Because it cannot just go to the space, so all the water in the world would go to vapor and then what? to the atmosphere? but then we would still have all the water. I remember seeinf the earth like a desert in discovery channel, it seems to me that the water must disapear somehow. This is just one of those questions... you'd never think you could get an answer but for the internet.....

Answer 1

it become plasma, but in this stage the high tempature will split the H2O and make it hydrogen and oxyegen

Answer 2

hydrogen 's ignition temp is 560 degrees Centigrade don't count on having a gas .

Answer 3

If it is hot enough it could leave the atmosphere.  I'm lazy right now but you can look up the velocity it would need to escape, and from that calculate how much heat it would need to get to that speed.  Hydrogen can escape I believe at normal temperatures (if physics one from 6 years ago isn't failing me).  If it escapes the atmosphere it would likely freeze and just be a chunk of ice floating through the universe.

Answer 4

Mars once had flowing rivers, but lost all of its water and atmosphere due to photo-dissociation by solar uv radiation.  This process strips hydrogen from water molecules while the solar wind  blows them off into space.

Water is a supreme temperature regulator due to its heat transfer capabilities.  Since 75% of the Earth is covered by water, temperature extremes have evened out.    However, millions of years from now--as you fear--as the temperature exceeds the boiling point of water, much of the water on Earth will boil away.  Heat increases the kinetic energy of gaseous molecules in the atmosphere, causing water vapor to rise further and further up, just like steam, and finally vaporize into space.  But before this even happens, we'd die in a steambath environment or from flooding due to torrential downpours, or increased lightning activity (8,000 lightning strikes stoked 800+ fires in CA last week).

Luckily for us, astronomers have discovered over 160 moons in our solar system.  We'd have to take the initiative in terraforming and bioforming them to make them Earth-like.  I'm surprised at how passive and resistant people are, they seem to think all of this will happen magically.  The most critical task is to create a magnetic field or "dynamo" to shield out cosmic rays.  A Superconducting Ring, ranging from 4 to 14 Tesla could theoretically accomplish this.  Advances in superconducting materials such as Iron doped with Arsenic, may may this a reality someday.  

Then, an atmosphere would have to be created to protect future inhabitants from gamma, uv and x-rays.  This can be accomplished by building restaurants, farms and bakeries on any globe.  That's because water vapor and CO2 are the 2 primary byproducts of combustion and aerobic respiration:

Combustion:

Butane C4H10 + 6.5 O2 --> 4 CO2 + 5 H2O

Aerobic Respiration:

C6H12O6 + oxygen --> 6 CO2 + 6 H2O + energy (ATP)

The good news is that the more people, farm animals, pets, and furry creatures on a planet/moon, the more water vapor, CO2 and methane gas given off.  Pretty soon it'll be flooding up on Mars also!  As long as we bring up mammals with lungs that take in oxygen, they'll contribute to the atmosphere 24/7.  So bring your pets, squirrels, hamsters, weasels, ground hogs, lorises, lemurs, etc.  Initially, we might have to use other techniques like outgassing or chemicals to release oxygen, nitrogen or CO2.  But eventually, natural processes will be necessary to create a sustained and viable atmosphere.

Answer 5

Water vapor will just get hotter and hotter and stay in the atmosphere. it dosent like disintergrate or anything it just remains permanantly in the gaseous sate therefore never allowing for it to rain