Evaporation In Daily Life: 13 Facts You Should Know


What is an example of evaporation?

Have you ever wondered why your wet hair gets dried after some time, what factors might help the hair dry quickly, and how it happens? Can understand the answer to all these questions by learning about a process called evaporation.

  • Evaporation is when a substance in its liquid state changes directly to a gaseous or vapor state below its boiling point.
  • Evaporation plays an essential role in maintaining the human body temperature. Since excessive heating of a body is not good and weakens, it becomes vital to develop a protective mechanism called sweating to prevent overheating. This process of sweating occurs through evaporation.
Simple representation of Evaporation process

In this article, we are going to learn more about evaporation through some examples.

What are the different examples of evaporation ?

Example of Evaporation :

Some common examples of evaporation that we encounter in daily life, atmosphere, and industry are as follows,

In Daily life

In our everyday life, we often encounter many examples of evaporation. For instance,

  • Perfume bottle when left open, the liquid present in it gradually decreases due to evaporation.
  • Drying of wet hair is due to evaporation. 
  • Melting of an ice cube.
  • when one performs physical activities, such as working under sunlight, jumping, running, etc., their body produces sweat, the sweat occurring on

In Atmosphere

  • Drying up water bodies like lakes, rivers, and ponds in summer is due to water evaporation. Here water gets evaporated and gets refilled after it rains.
  • Evaporation is an necessary process in the formation of the water cycle.
  • The cooling of water in an earthen pot indicates the cooling effect of evaporation, and the water cools as it evaporates from the surface of the earthen pot.

In Industry

  • The process of evaporation is used to dry various things, right from clothes to industrial raw materials.
  • Evaporation applies to the cleaning and purification of substances at the molecular level.
  • Coolers are essential for engines and nuclear reactors, and the process makes these coolers of evaporation.
  • The process of formation crystal from a liquid solution utilize crystallization process with help of evaporation.
  • Utilized in food processing such as milk product and others.
  • The concentration of samples in chromatography depends on centrifugal evaporator.

Freezing, boiling, and evaporation are all examples.

  A change of state of matter refers to its physical transformation. It includes the processes such as freezing, boiling, evaporation, condensation, melting, and sublimation. The matter is made of tiny mobile particles called molecules. Here freezing, boiling, and evaporation are all examples of a physical change, and these are the essential processes observed in the water cycle.

Comparison between Freezing, Boiling, and Evaporation.

  FREEZING        BOILING   EVAPORATION  
 Freezing refers to the change of state of a substance from liquid to solid state at a specific temperature called freezing point.  Boiling is a process in which liquid turns into vapor form when heated at its boiling point. Evaporation is a process that refers to changes in the state of a substance from its liquid to solid state below its boiling point.
 Occurred in the entire mass of the substance, i.e., it is a bulk process. Occurred in the entire mass of the substance, i.e., it is a bulk process. Occurred in the surface of the liquid, i.e., and it is a surface process.
 Required specific temp. Required specific temp. It happen below boiling point of the liquid.
 Ex: Liquid water freezes into solid ice.  Ex: Boiling of milk. Ex: Melting of an ice cube.

Non-examples of Evaporation.

  • A person keeps the bowl of water to boil to prepare food, and some water turns into vapor, which enters the atmosphere. Therefore, it is a non-example for evaporation because it is cooking, and it is different from evaporation.
  • Condensation is the opposite process of evaporation; that is, a substance in its gaseous state changes back to a liquid. Another non-example of evaporation is clouds which are visible to the eye. Invisible clouds are due to evaporation, but it is because of condensation when the cloud becomes visible. Hence the formation of cloud is a non-example of evaporation.

Example of evaporation mixture.       

The evaporation method helps to remove liquid components in the form of vapor from the solid parts.

This process involves heating the solution until no more liquid is left behind. It is unnecessary to isolate the liquid component from the solution because all the liquid ingredients will evaporate with time.

Can separate several solutions by using the process of evaporation. Some examples of evaporation mixture commonly observed in the household or the labs are as follows.

  •  Can separate salt and water by using evaporation.
  • Even sugar and water, which we use in daily life, can be separated through evaporation.
  • Copper sulfate crystals can be separated from copper sulfate solution in laboratories as we know that copper is soluble in water. Utilizing evaporation,solid copper sulfate crystals kept only other part evaporate.

Example of Evaporation in daily life explanation | Real-life examples of evaporation.

The melting of an ice cube.

 It is the best day-to-day example of evaporation, when we take a cube of ice out of the refrigerator, we can notice that it changes its shape from solid to liquid after a minute. This change happens because of the process of evaporation. Further, if the temperature of the ice cube increases, it will evaporate entirely and vanish into the air.

Have you ever noticed that ironing slightly wet clothes work better to remove wrinkle?

Ironing of Clothes.

This is because of the evaporation of water in the clothing as this process creates a steaming effect to make it wrinkle-free. Wet clothes dry in the sun due to evaporation and the water present in wet cloth will evaporate if ironed, hotpress will evaporate water vapor trapped in the fabric and hence remove wrinkles.

Drying of Wet Tables

If a waiter wipes table did not stay wet after some time  because of evaporation.

Drying of a Wet Floor.

When you accidentally spill water on the floor, you try to mop it. If it is a sunny day, you need not do it because, however, after 5 or 10 minutes, you will notice that the floor is dry. Because of evaporation, the heat in the air warms the water droplets present on the floor, evaporating so that the floor does not stay wet.

Drying of Wet Clothes

Have you ever tried to dry your clothing on a line in the summer? Your clothes get dry because water droplets evaporate out of the dress in the form of vapor due to heat produced from the sun.

Examples of Evaporation: Drying of Wet Clothes
 Image Credit: Red Shorts, erix!CC BY 2.0

 Drying of Puddles.

After heavy rainfall, we can find streets with puddles. However, puddles are disappeared after sun rises. It is because the heat energy obtained from the sun evaporates the water present in the reservoir and therefore, we can say that evaporation plays a vital role in the water cycle.

Hand Sanitizer.

 When we use a hand sanitizer, our hands dry up quickly, giving a cooling effect. It is because spirit present in sanitizer has a slower evaporation rate than water, so it evaporates quickly due to your body’s heat. The exact process happens for nail polish remover. (Acetone)

Blow Dryer | Hair Dryer.

When you are in a rush, you probably use a blow drier to dry your hair. The heat from the blow dryer speedily evaporate the water molecules existing in your hair.

Preparation of Salt.

Salt is extracted from seawater by allowing the water to evaporate over a long time. The salt that gives the saltwater its saline taste is left behind. Salt ponds disappear slowly at a standard temperature rate. The salt that is left behind over the evaporated ponds is used to make table salt. Salt crystals are obtained either naturally by evaporation of seawater using some techniques or from an industrial process.

Examples of Evaporation in the kitchen.

  • Hot tea/coffee/milk gets cool over time because of evaporation.
  • It is observed that sipping of hot coffee/milk faster from a saucer than from a cup, since a saucer has a larger surface area compared to a cup, it cools down very quickly (This indicates that evaporation depends on surface area).
  • Evaporated water from cooking pan.

Whistling of kettle

   The kettle produces a whistle when the water present in it starts to boil due to the evaporation process; this whistling phenomenon happens because water gradually evaporates into steam. It causes the kettle to whistle, letting you know that hot water is ready to drink.

Working of Pressure cooker

When we apply heat to the cooker; as a result, the water present inside it starts to vaporize. Hence, a small amount of steam comes out of the pressure cooker due to evaporation, indicating the dish is ready.

One more important thing to remember is, we should seal the cooker before the application of heat. Otherwise, the pressure generated inside the pressure cooker will not be enough to speed up cooking.

Examples of water evaporation.

Liquid starts to evaporate when heated, and molecules present inside the liquid start to rush; after this, they escape as vapor/gas molecules into the atmosphere.

  • Drying up of different water bodies.
  • Hot drinks cool after a while due to evaporation.
  • Drying of a wet or mopped floor.
  • Drying wet hair after a while.

Evaporation of sweat cools the body.

  Sweat is a cooling mechanism as it shed excess heat and keeps our body cool!

 When we go out during a hot summer day, we feel hot, and later we sweat to cool down ourselves. Have you wondered how does it work? Pretty simple. When our body is excessively heated, it makes use of the evaporative process through sweating. Sweat consists of 90 % water, starts to evaporate. Water leaves our skin through pores. The water then evaporates off our skin, cooling us down. The degree of cooling depends on the rate and heat of evaporation.

Examples of Evaporation that causes cooling are as follows.

  • An air cooler is worked on the process of evaporation.
  • Storing of water in a clay pot

                                                                             

Image Credits: Clay water pitcher, Serge Melki, CC BY 2.0

During summer, water is usually kept in mud pots to keep it cool, and this cooling effect occurs because of evaporation. Water is cooled in the pot because the pot’s surface comprise ample pores, and water seeps thru these small hole to the outer surface of the pot in very slow process, cool the pot and hence cool the water in it. 

Other examples include such,

  • We feel colder while nailpolish removing as nail polish remover contains Acetone.
  • Wearing cotton clothes during summer helps us to feel more relaxed.
  • Deodorant gives us a cooling effect when applied to our body since it reduces the body temperature instantly.
  • Water vaporization of tree leave cool the atmosphere.
  • A desert cools better on a hot day compared to a dry day.
  • People usually wear cotton clothes during summer days to keep the body cool.
  • We sweat to cool (Evaporation). Even a refrigerator works on the same principle.

Example of evaporated milk.

     Evaporated milk is one of the best-known examples of evaporation.

  • Evaporated milk or unsweetened condensed milk differs from regular condensed milk, which contains added sugar.
  • This will remove ~ 60% of the water from regular milk by evaporation and other processes.
  • Evaporated milk has half of its water drawn through the evaporation process before it is homogenized (milk fat is uniformly mixed into milk), sterilized (to avoid the growth of micro-organisms), and packed.

The process to get evaporated milk

When fresh milk is heated continuously, heating the milk gives it a creamy texture. It It happens because, while heating the milk, half of the liquid from milk evaporates in vapor. It creates a thicker version of milk that has a creamier consistency and a slightly darker color. Still, with over half of its liquid is removed, its nutrient composition remains the same, making it a nutritious and protein-rich milk product.

What is the differences between Evaporation and Condensation ?

Following are some fundamental differences between Evaporation and Condensation.

     EVAPORATION     CONDENSATION 
   Daily LifeWhen someone gets out of the shower, the water droplets on their body evaporates as they wipe it. If a person leaves a glass of water outside under sunlight, the water level gradually decreases as it evaporates.Condensation is also observed when you take a hot bath, and the bathroom mirror fogs up. It occurs as the heated air meets the cool mirror.When you go out for a walk on a cold day, you will be able to observe your breath as you exhale. This is because the air leaving your lungs is warmer than the surrounding air temperature, which causes the water vapors to condense into a mist.
   AtmosphereDuring summer, people often sprinkle water for cooling purpose. Drying up of water in potholes from streetsCondensation can be seen when drops of water form outside glass of cold water or any cold substance. The bubbles seem to appear from water vapor present in the air. The dew/water drops observed on the grass in the early morning are another example of condensation.

     

Example of evaporation liquid to gas.

The cooling effect of evaporation example.

 There are numerous examples of evaporation of a liquid to gas. Some of them are as follows,

  • The usual one is the evaporation of a liquid to gas or vapor observed in the water cycle.  Evaporation is the 1st step of the water cycle. The heat obtained from the sun turns water from the water bodies into vapor; this vapor then enters into the atmosphere and then undergoes other processes to form clouds followed by rain, if evaporation is not occurred,water cycle would remain be incomplete.
 Image Credit: “Windsor Road Potholes” by Alan Stanton is licensed under CC BY-SA 2.0

                         

Disappearing of rain potholes is seen on a hot day, this happens due to the evaporation of water in the pothole into vapor, and the pothole shrinks slowly, making it disappear. Similarly, as the water boils in a pot, the level of the water decreases. Here water seems to disappear, but it moves into the air in the form of gas. The liquid water is not disappearing in these examples, but it is changing into a gaseous state.

Which is the best example of evaporation?

  • Cooling towers are one of the best evaporation applications; we can find them in nuclear power plants.
  • Evaporation helps in the concentration of some products. For example, through evaporation, we can obtain sugar from molasses/ sugarcane.
  • Spa or Hot springs use vaporized waters, and this vaporized water is used to relax muscles of the body.

  FAQs | Frequently asked questions on evaporation

Examples of evaporation | What are the uses of evaporation in our daily life?

Evaporation helps to dry the mopped floors, drying of wet clothes, evaporate Acetone used in nail paint remover, melt ice cubes, etc.   

Is boiling water an example of evaporation?

Boiling water is not an example of evaporation because boiling water occurs at a particular temperature called boiling point, whereas evaporation occurs below boiling point. 

Examples of Evaporation on living organisms?

  • In many living organisms, including human beings, evaporation of sweat is expected as it contains 90% water; it helps the organism cool themselves in the hot summer to maintain that body temperature.
  • It can observed in processes like respiration, perspiration, and urination.
  • During photosynthesis, excess water evaporate from the leave’s surface  as water vapor.

Example of evaporation mixture?

Sugar mixed with water, salt mixed with water, and copper sulfate solutions are some examples of evaporation mixture.

What is Evaporation?

Evaporation is a physical process in which matter in its liquid changes to its gaseous state.

Example of Evaporation in separating mixtures?

The mixture of water and milk is a homogeneous mixture separated by evaporation to get evaporated milk.

What are examples of evaporation in the household applications ?

Examples of Evaporation that we often observe in a household are working a pressure cooker, ironing clothes, drying wet hair, etc.

What are two examples that explain the fact that evaporation causes cooling?

  • Dogs put their tongue out and pant it to keep their body cool; because of the cooling effect of evaporation.
  • If you touches Acetone, feels chilled as the wind blows because of evaporation.

How can the process of evaporation be described?

Evaporation is a physical phenomenon in which a physical entity in its liquid state changes into the gaseous state; evaporation occurs on the surface of the liquid.

It occurs because water molecules vibrate rapidly at a particular temp, which resulted to molecules energy gain to discharge from the lattice. 

Is evaporation an adiabatic process?

Yes, evaporation is an Adiabatic process.

Adiabatic cooling is a phenomenon caused by the phase transition from the solid to liquid or from the liquid to gaseous state. It is also called an evaporative cooling process.

For example, when people transpire, sweat is excluded from their pores, the sweat starts to evaporate on the skin’s surface, the heat energy needed for the evaporation process is taken from the body; the body, therefore, achieves adiabatic cooling through evaporation.

Raghavi Acharya

I am Raghavi Acharya, I have completed my post-graduation in physics with a specialization in the field of condensed matter physics. Having a very good understanding in Latex, gnu-plot and octave. I have always considered Physics to be a captivating area of study and I enjoy exploring the various fields of this subject. In my free time, I engage myself in digital art. My articles are aimed towards delivering the concepts of physics in a very simplified manner to the readers. Let’s connect through - LinkedIn: https://www.linkedin.com/in/raghavi-c-s-260a801b1 EMAIL ID: raghavics6@gmail.com

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