what process changes water into vapor?
473966
Evaporation. The sun's heat turns water into vapour.
852036
It's called vapor deposition.  Sublimation is when a solid goes directly to gas.
833749
Clouds are water vapor. Think of it like a pocket of fog in the sky.
273842
While cooking,\n1.water get boils and changes to water vapour.\n2.the proteins etc gets heated.\n3.If the container is  closed,water vapour cools and changes to water
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air and water vapor\n\ntheir volume depends on temperature and pressure
170869
Steam (otherwise known as water in the gas phase) is produced when water boils.\nBut you already knew this.\n\nAll you need to do is boil some water.\nSet a pot on the stove, fill with water, turn on the heat, wait, and there is your "Steam Machine".
677096
its called phase change of water, but it is given a common name known as evaporation
937711
A demineralizing plant does just that, it demineralizes water.  Water, used in boilers to produce steam, has a lot of minerals and oxygen in it.  These minerals will form deposits on boiler tubes and therefore reduce heat transfer (or in simpler terms, make it harder to heat the water into steam).\n\nDemineralization is accomplished by ion exchange.  Basically, salt ions in water are replaced with hydrogen ions.  To learn more about the process, I'd look up "zeolite process" on google or Yahoo!.
847634
I'm going to assume you mean water distillation.  Water distillation is done by evaporating water (one change of state: evaporation), and then cooling that water vapor (another change of state) and collecting the liquid water.
245118
Evaporation is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state. \n\nOR\nEvaporation : \nThe conversion of a liquid (eg water) into a vapor (a gaseous state) usually through the application of heat energy; the opposite of condensation.  \n\n\nExpansion : the act of increasing (something) in size or volume or quantity or scope
1080413
Evaporation of water: water turns into steam or water vapor. It's still water (H2O). Same molecule, same chemistry...just different state. So it's a physical change.\n\nRusting of iron: Iron combines with oxygen in the air to turn to rust. Rust is a different compound from pure iron. So it's a chemical change. The reaction is iron + oxygen -> rust, or 4 Fe + 3 O2 -> 2 Fe2O3.\n\nCombustion of hydrogen: Hydrogen burns with oxygen in the air to turn to water. Hydrogen and water are not the same, so it's a chemical change.\n\nTarnishing of silver: This is like rusting, so silver combines with oxygen to form a silver oxide. This is again a chemical change. (People who said it's physical probably don't know what tarnishing is.)\n\nSo anything that involves atoms or molecules combining (or splitting) and forming new atoms or molecules is a chemical change. Anything that keeps the same atoms and molecules, just in a different form, is a physical change.
782152
Through evaporation, the water evaporates into the air and leaves the salt behind.\n\nWhen the water in the air condenses and comes back to earth as rain or snow or dew, it is again fresh water until it flows into a body of saltwater where it again mixes with the salt.\n\nSalt can also be removed through a variety of chemical and/or electrolytic "desalination" processes, but I assume you mean naturally.\n\nThe principal methods of mass conversion of salt water to fresh water (for providing drinking water in a desert environment or onboard a ship at sea) is done through either distillation, in which the salt water is boiled leaving the salt behind and the steam recondensed to form liquid water, or through a process called osmosis where the water flows through a membrane or material that the salt will not pass through.\n\n=== EDIT ===\n\nYes, a bit of research confirms that the principal method of converting saltwater to freshawater onboard a ship is either a flash-type evaporator (primarily used on older ships and nuclear powered ships) or a reverse-osmosis plant (used on more modern ships).  Both types are also used on US Navy bases where freshwater is not readily available.\n\nThe evaporator basically pre-heats the saltwater to near boiling, and then injects it into a vacuum chamber where it immediately flashes into steam except for a small amount of "brine" left over -- the steam is run through cooled pipes where it condenses into water, and the leftover brine is pumped back overboard.\n\nThe reverse-osmosis uses high pressures to force the water through a membrane which the salt cannot pass through.  Again, the leftover "brine" is pumped back into the ocean since it is just seawater with some of the water removed.
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evaporation , condensation
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In the clouds as water vapor.
1052558
In freezing, the latent heat of fusion in the water molecules is released with out the water changing its temperature. The molecules lose average kinetic energy, and start behaving like particles in a solid, with minimal vibrational movements and close seperations. The reverse process is melting, where latent heat of fusion is absorbed by the water molecules, increasing average kinetic energy which is used to break bonds between molecules so they start behaving like particles in a fluid.\n\nThe transition from liquid to vapour, and vice versa follows a similar path, except the heat energy required for the process is in this case called latent heat of vaporisation.
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Evaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state. It is the opposite process of condensation.\n\nThe thermal motion of a molecule of liquid must be sufficient to overcome the surface tension and evaporate, that is, its kinetic energy must exceed the work function of cohesion at the surface. Evaporation therefore, proceeds more quickly at higher temperature, at higher flow rates between the gaseous and liquid phase and in liquids with lower surface tension (i.e. higher vapor pressure). Since only a small proportion of the molecules are located near the surface and are moving in the proper direction to escape at any given instant, the rate of evaporation is limited. Also, as the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid thus decreases. This phenomenon is also called evaporative cooling. This is the reason that evaporating sweat cools the human body.\n\nGas has less order than liquid or solid matter, and thus the entropy of the system is increased, which always requires energy input. This means that the enthalpy change for evaporation (ΔHevaporation) is always positive. Evaporation is a cooling process.\n\nEvaporation is a critical component of the water cycle, which is responsible for clouds and rain. Solar energy drives evaporation of water from oceans, lakes, moisture in the soil, and other sources of water. In hydrology, evaporation and transpiration (which involves evaporation within plant stomata) are collectively termed evapotranspiration.\n\nEvaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state. It is the opposite process of condensation.\n\nThe thermal motion of a molecule of liquid must be sufficient to overcome the surface tension and evaporate, that is, its kinetic energy must exceed the work function of cohesion at the surface. Evaporation therefore, proceeds more quickly at higher temperature, at higher flow rates between the gaseous and liquid phase and in liquids with lower surface tension (i.e. higher vapor pressure). Since only a small proportion of the molecules are located near the surface and are moving in the proper direction to escape at any given instant, the rate of evaporation is limited. Also, as the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid thus decreases. This phenomenon is also called evaporative cooling. This is the reason that evaporating sweat cools the human body.\n\nGas has less order than liquid or solid matter, and thus the entropy of the system is increased, which always requires energy input. This means that the enthalpy change for evaporation (ΔHevaporation) is always positive. Evaporation is a cooling process.\n\nEvaporation is a critical component of the water cycle, which is responsible for clouds and rain. Solar energy drives evaporation of water from oceans, lakes, moisture in the soil, and other sources of water. In hydrology, evaporation and transpiration (which involves evaporation within plant stomata) are collectively termed evapotranspiration.
1081964
they are all fases of the water cicle. First the water evaporates (goes from being in a liquid state to being in a gasy state) due to the heat coming from the sun, the water vapor rises up in the air and condensates (takes a more dense state but still remains being water vapor) then after a lot of water vapor is concentrated (humidity) a cloud forms and it gets bigger and bigger as more and more water vapor concentrates until the amount of humidity is to large and the water vapor turns into water and precipitates wich would conclude the cicle in this last fase ,wich goes by the name of precipitaion, and then to start all over again.