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What is evaporation.
Why does some water evaporate at room temperature. You might be wondering how that can happen when the temperature is low. When answering this question it s helpful to think of temperature as kinetic energy that is energy that is transferred. Don t worry you don t have to live in a house that s a scalding 212ºf just for water to disappear on its own. The surrounding gas must not be saturated with the evaporating substance.
Asked by wiki user. Wiki user answered. Evaporation is all about the energy in individual molecules not about the average energy of a system. The boiling point of water is 212 f or 100 c.
For example water freezes at 32 f or zero c. Though the fahrenheit scale was popular through the mid 1970s in the english speaking world most countries have since begun using the celsius scale. When the molecules of the liquid collide they transfer energy to each other based on how they collide with each other. 2011 02 21 21 45 49 2011 02 21 21 45 49.
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. That process is called evaporation. All liquids can evaporate at room temperature. The average energy can be low and the evaporation still continues.
Petrol is a mixture of hydrocarbons with the. Why does water evaporate at room temperature. High temperatures just increase the rate of evaporation. It turns out that all liquids can evaporate at room temperature and normal air pressure.
Clearly water does evaporate at 212ºf but it also evaporates at room temperature. If the air is dry enough more molecules will jump from your cup into the air than will stick from the air into the water. Petrol or gasoline evaporates faster than most liquids because of its weak intermolecular attractions. Conversely when the air is drier water molecules in your cup of water can get bumped up into the air and stick to other molecules that are floating around.
All fluids are always evaporating. Water evaporates anywhere that has some. However there are some circumstances that typically require water to be certain temperatures.
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