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Evaporation and Condensation
Evaporation is an endothermic process that is the conversion of a liquid to the vapor state by the addition of latent heat. Condensation is a type of chemical reaction in which water or another simple substance is released by the combination of two or more molecules. The term is also used to describe the process by which a gas or vapor changes to a liquid. In weather, evaporation occurs when water on the earth changes to water vapor and enters the atmosphere. The opposite of evaporation, condensation transforms water vapor in the atmosphere into a liquid, often resulting in precipitation, most commonly in the form of rain or snow.
2,794 Questions
Under which atmosphereic conditions will water evaporate at the fastest rate?
Water will evaporate at the fastest rate under hot and dry atmospheric conditions because high temperatures increase the kinetic energy of water molecules while low humidity levels reduce the air's capacity to hold water vapor. This combination creates a strong driving force for evaporation.
Why is condensation an important process in the water cycle?
Well when water evaporates if it does not condense into a cloud(s) it would be less likely the water in the gas state to turn into liquid; if it is in a cloud it would turn into liquid and rain and repeat the water cycle.
Does refrigerant enter evaporator as a liquid in a direct expansion evaporator?
It will, in basically all cases be a mixture of liquid and vapor, which means the refrigerant is saturated but with a few bubbles entering the evaporator. In a properly operating system though entering the metering device should be solid liquid and some sub-cooling (sub-cooled means cooler then saturation and therefore= no vapor) but then through the metering device (TXV, cap tube, orifice) some of the liquid will boil off, which is called flash gas, in order to cool the refrigerant down as saturated temperature goes down (the pressure to boiling point relation, as pressure is reduced boiling point is lowed). The amount of flash gas is directly related to the specific heat of the refigernt (BTUs/lb), the number of degrees you are cooling the refrigerant (eg. 95 to 45), and the latent heat of vaporization (BTUs/lb for change of state. liquid to vapor)
How does surface evaporation happen?
When water molecules at the surface gain sufficient energy they can escape in the atmosphere. Evaporation (not vaporization) occur at any temperature; a higher temperature increase the rate of evaporation. The energy of water molecules increase by a temperature increase and some molecules at the surface can escape in the atmosphere.
Does water evaporate quicker on a bigger surface area?
Yes, water evaporates quicker on a bigger surface area because there is more surface area available for water molecules to escape into the air. This is why a larger body of water, like an ocean, will evaporate more slowly compared to a small puddle.
What is the fastest evaporating lighter fluid?
Naphtha-based lighter fluids tend to evaporate faster than others due to their low boiling point and high volatility. Look for products specifically labeled as "naphtha" for a quicker evaporation rate.
What is the faster way to make a pot of water evaporate?
The fastest way to make a pot of water evaporate is to increase the temperature of the water by using a higher heat setting on the stove. Additionally, increasing air circulation around the pot by using a fan can also speed up the evaporation process.
Do oil spills evaporate in salt water?
Not entirely. The oil that spilled in the gulf coast will change in composition with time, due to evaporation and biological processes. It may exist the well head as a light oil and wash up later on beaches as an oil emulsion, or tar balls with a much higher viscosity.
What causes juice to evaporate slower than water?
Juice contains sugars and other solutes that increase its boiling point, making it evaporate slower than water, which is a pure substance. Additionally, the presence of sugars and other compounds in juice can reduce the vapor pressure at the surface, slowing down the rate of evaporation compared to water.
How does the application of heat cause the evaporation process to speed up?
The application of heat causes an increase in the evaporation rate of a substance because the added thermal energy will "offset" cooling that results from the evaporation. Let's look at this just a bit more closely to get a handle on things by considering water in a pan.
Water molecules in a pan will be bumping around against each other in the liquid. They have some given thermal energy. The molecules tend to "stick together" and stay in the pan in the form of a liquid, but some of the water molecules at the surface will "jump out" or "escape" the liquid and become a vapor. When they do this, they take thermal energy with them in making their change of state from liquid to gas. This is evaporation. The result is that the water in the pan will cool down. Let's jump aside for a moment.
If you wet your finger and blow on it, you can feel your finger cooling down. Or if you get out of a pool and a breeze swirls around you, you immediately feel cooler. Evaporation and cooling in action, and you can't miss the effect. Even a blind person could see what is going on. Now back to the example.
If we consider the water in the pan, we see it cooling down, and this means that the water has less thermal energy in it. Less thermal energy in the water translates into fewer molecules of water at the surface being able to snatch enough thermal energy from the liquid to change state into a gas. The evaporation rate is slowing because the evaporating water strips thermal energy from the remaining water. Add some heat to the bottom of the pan, and this additional thermal energy will "offset" the loss of thermal energy due to evaporation. That heat may very well not only offset heat loss by evaporation, but it may easily add lots of thermal energy to the water and speed up the evaporation process. Think it through and it will make perfect sense.
Is evaporated water a gas or liquid?
Yes, water vapor is a gas.
-si it es. but when evaporatied water collects up it returnes into el liquid.
Evaporation only occurs at the surface of liquid true or false?
False it can happen on any surface with moisture on it. ( think i spelled moisture wrong).
Does evaporation take place when relative humidity is high or low?
Evaporation takes place when relative humidity is low because the air has a higher capacity to hold water vapor. When relative humidity is high, the air is already saturated with water vapor, making it difficult for additional moisture to evaporate.
In Israel large quantities of potash are extracted by evaporating the water from?
In Israel, large quantities of potash are extracted by evaporating water from the Dead Sea, which is highly concentrated with mineral salts including potash. The evaporation process allows the potash to be separated and harvested for use in various industries such as agriculture for fertilizer production. Israel is one of the world's leading producers of potash due to the abundance of mineral-rich resources in the Dead Sea.
When water is evaporated from a surface does the surface get cooler or hotter?
When water evaporates from a surface, it absorbs heat from the surface, causing the surface to cool down. This is because energy is required to break the bonds between water molecules and turn them into vapor, drawing heat energy from the surface in the process.
Does water from a puddle evaporate or condense?
Puddles evaporate due to the random movement of some of the atoms. This causes some of the atoms to reach their "boiling point". Once this happens the molocules evaporate and then the puddle cools down. Eventually the puddle warms up due to the warmer suroundings. Then the particles warm up so they start to move and then some of them reach teir "boiling point", these molocules then evaporate. This cycle is repeated over and over again until the puddle has completely evaporated.
Because of the heat the particles get smaller and smaller until you can't see them
Does water from a puddle become water gas or condense?
simple it depends if it is sunny it evaporates if it is cold but not at freezing it will condense
Liam sams
Which water evaporate fast salt water or pure water?
pure water
Discussion
Dissolving something in water which does not evaporate easily will make the mixed solution less likely to evaporate than pure water. The more stuff you add to it, the less likely it will evaporate.
Adding salt to water makes ions in solution and these ions reduce the vapor pressure of the solution compared to pure water. The lower the vapor pressure of a liquid or solution, the slower it will evaporate. This effect is also related to boiling point elevation and freezing point depression.
Water that evaporates into the air is an example of?
Water evaporating into the air is an example of the water cycle in nature. Evaporation is the process where liquid water turns into water vapor due to heat from the sun.
The presence of many metamorphic rocks in Virginia is an indication that the area was subjected to intense heat and pressure, causing the original rock to undergo changes in mineral composition and texture. This process typically occurs deep within the Earth's crust during tectonic activity such as mountain building or plate collisions.
Why does evaporation require energy?
Every living, breathing thing needs energy. Some non-living things need energy too. Like, batteries, lightbulbs, etc. Evaporation needs energy to do its work, which is water EVAPORATING into thin air, becoming a cloud, (condensation), etc. That's your answer.
An increase in evaporation is caused by?
An increase in evaporation is caused by higher temperatures, increased surface area of water bodies, and higher wind speeds. These factors provide more energy for water molecules to overcome attractive forces and transition from liquid to vapor state.
Does evaporation cause cooling in the residual liquid?
Yes, evaporation causes cooling in the remaining liquid because the molecules that are evaporating are taking energy from the surrounding liquid as they escape. This leads to a decrease in the average kinetic energy of the remaining molecules, resulting in a cooling effect.
Where does most of the moisture in the air evaporate from?
Moisture in the air primarily evaporates from bodies of water, such as oceans, lakes, and rivers. It can also come from plants through a process called transpiration, where water evaporates from leaves.
