Asked by: Saioa LVI
home and garden indoor environmental quality

What is happening to water at a molecular level when it evaporates and condenses?

Last Updated: 19th April, 2020

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Condensation is the process in which molecules of a gas slow down, come together, and form a liquid. When gas molecules transfer their energy to something cooler, they slow down and their attractions cause them to bond to become a liquid. Making water vapor colder increases the rate of condensation.

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Also question is, what happens at a molecular level during evaporation?

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. Heat from the sun, or solar energy, powers the evaporation process.

One may also ask, is heat added or removed in condensation?

Change of State From Heat Added or Removed
Freezing Liquid Removed
Vapourization Liquid Added
Condensation Gas Removed
Sublimation Solid Added

Likewise, what happens to energy during evaporation?

In evaporation, matter changes from a liquid to a gas. All matter is made of tiny moving particles called molecules. Evaporation and condensation happen when these molecules gain or lose energy. This energy exists in the form of heat.

Is energy added or removed in evaporation?

Evaporation happens on the surface and is a much slower process. By adding energy you cause the molecules to move faster and break away from the others. The temperature that evaporation occurs is called the vaporization point or boiling point. Water boils at 212 °F (100 °C).

Related Question Answers

Ngoc Cabero

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What is the opposite of evaporation?

The opposite of evaporation is condensation. Condensation describes the phase change from gas to liquid. Evaporation occurs when molecules at the surface of a liquid enter the gas phase at a temperature below the boiling point of the substance.

Astor Anelli

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What is an example of evaporation?

Examples of Evaporation. Two familiar examples of evaporation are sweating and the rain cycle. Water on earth's surface evaporates and travels up through the atmosphere, where it's cooler. The cooler temperatures cause the vapor to condense back into water droplets, which come together to form clouds.

Nataliia Largara

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What are the causes of evaporation?

Evaporation happens when atoms or molecules escape from the liquid and turn into a vapor. Not all of the molecules in a liquid have the same energy. When you have a puddle of water (H2O) on a windy day, the wind can cause an increased rate of evaporation even when it is cold out.

Latrice Grossekathofer

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At what temperature does evaporation occur?

Why evaporation occurs
Heat (energy) is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is why water easily evaporates at the boiling point (212° F, 100° C) but evaporates much more slowly at the freezing point.

Dorthe Barredo

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What are the benefits of evaporation?

Evaporation process benefits for foods and beverages. Beverage producers use evaporation processing to create concentrates (such as juice concentrates). Dairy producers use it to dry whey or lactose into powders, which can then be used in new products like infant formula or protein shakes.

Fettouma Tejeiro

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Which liquid will evaporate the fastest?

Conclusion: It was concluded that different liquids do evaporate at different rates, according to the physical properties of the given substance. Nail polish remover vaporized the quickest, followed by water, salt water, vinegar, orange juice and oil.

Jeannette Escamez

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What is the mechanism of evaporation?

The Mechanism of Evaporation. The intuitive notion of evaporation is that the heating of a liquid drives the molecules of a liquid into the gas it is in contact with. Likewise the intuitive notion of why warm, dry air causes a liquid to evaporate is that the dry air sucks the molecules out of the liquid.

Elhassan Ramalhete

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What happens at the molecular level?

On the molecular level, the individual chemical bonds in the substance are not altered; hence, a phase change is not a chemical reaction. Instead, the molecules experience a decrease in potential energy in an endothermic phase change.

Husein Tumanyan

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Is sublimation gaining or losing energy?

Sublimation is the change of state in which a solid changes directly into a gas. A. Losing or Gaining Energy When most substances lose or gain energy, one of two things happens to the substance: its temperature changes or its state changes.

Lupicina Lorena

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What affects evaporation rate?

There are many factors that affect the evaporation rate. The rate of evaporation depends on the liquid's exposed surface area (faster when increased), the humidity of surroundings (slower when increased), the presence of wind (faster when increased) and the temperature (faster when increased).

Berenguer Cherino

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Will evaporation be faster or slower on a cloudy day why?

Water evaporates faster if the temperature is higher, the air is dry, and if there's wind. In sunny, warm weather the loss of water by evaporation is greater than in cloudy and cool weather. Humidity, or water vapor content of the air, also has an effect on evaporation.

Jonnie Brossard

Teacher

Is energy absorbed during evaporation?

Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process. If the vapor then condenses to a liquid on a surface, then the vapor's latent energy absorbed during evaporation is released as the liquid's sensible heat onto the surface.

Ghizela Shamakin

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Why is evaporating water so energy intensive?

As liquid water heats up, hydrogen bonding makes it difficult to separate the water molecules from each other, which is required for it to enter its gaseous phase (steam). The fact that hydrogen bonds need to be broken for water to evaporate means that a substantial amount of energy is used in the process.

Ashraf Brendli

Teacher

Is energy lost or gained during melting?

It loses thermal energy and the movement of particles decreases. In vaporization does the liquid lose or gain thermal energy and does the movement of particles increase or decrease? Thermal energy gains and the movement of particles increase.

Salifu Eisler

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What is another word for gas chem4kids?

You might hear the term "vapor." Vapor and gas mean the same thing. The word vapor is used to describe gases that are usually liquids at room temperature. Good examples of these types of liquids include water (H2O) and mercury (Hg).

Fermi Noain

Reviewer

How long does it take for a drop of water to evaporate?

The water takes 1.2 hours to fully evaporate.

Hubertus Bodiger

Reviewer

What is it called when a gas turns into a liquid?

When a gas changes into a liquid, it is called condensation. When a liquid changes into a solid, it is called solidification. When a gas changes into a solid, it is called deposition. When a liquid changes into gas, it is called evaporation.

Margot Schonlein

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What happens if you remove heat from a solid?

Adding heat can cause ice (a solid) to melt to form water (a liquid). Removing heat causes water (a liquid) to freeze to form ice (a solid). When water changes to a solid or a gas, we say it changes to a different state of matter.

Shenghua Velhinho

Reviewer

What happens when you take away heat from a solid?

If you heat up a solid - you give it some energy. This causes the particles to move more and the solid to change into a liquid, or melt. If the liquid is heated then it may evaporate and turn into a gas. Taking energy away from a gas (cooling it down) may cause it to turn into a liquid - or condense.