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Water evaporates because individual water molecules break free of the bonds that hold them all together as a liquid. While water evaporates more in heat, it is possible for it to evaporate in cold conditions.


Water begins to evaporate whenever its molecules speed up enough to break free from their bonds. A water molecule, or H20, is made of two hydrogen atoms and one oxygen atom.


Although the rate at which water evaporates varies depending on temperature, humidity, wind speed and other factors, the average swimming pool loses about 1/4 inch of water per day. Direct sunlight also speeds the rate of outdoor water evaporation.


Evaporation occurs as a result of the energy transfer between molecules due to random collisions that can excite molecules to turn from liquid to gas. While some level of evaporation can occur at a temperature below the liquid's boiling point, adding energy, typically through heat, is necessary to i


There is not a specific temperature that water must be in order for it to evaporate. However, as temperature rises, evaporation typically increases because water molecules are moving more quickly. The faster they move, the more likely it is that they will break away from the pack and evaporate.


Salt does not directly affect the evaporation of water. However, the evaporation habits, temperatures and movement of certain areas of saltwater bodies can affect the salinity, or salt level, of those bodies of water, resulting in changes in evaporation and precipitation. Higher levels of evaporatio


Water evaporates faster at higher temperatures, when its surface area increases and when exposed to moving air. The concentration of water and other substances in the surrounding air and air pressure also affect evaporation rate.


Alcohols, such as ethanol and methanol, evaporate at a rate similar to other compounds of their type, but water evaporates comparatively slowly because of its strong bonds. Water molecules easily form hydrogen bonds with one another, which creates a tangled network of attraction within the liquid.


Around 3 trillion tons of ocean water is evaporated each day, much of it from the heat of the sun. The rate at which water evaporates depends on several factors.


Evaporation is a cooling process because when liquid turns to gas, it needs more energy, and so it has to take that energy from its surroundings. The energy is in the form of heat, and when the heat energy leaves with the evaporating liquid, the surroundings get cooler as a result. This has to do wi