What is evaporation in physics class 9?

Answer: Solution: The change of state of a liquid to vapour at all temperatures is called evaporation.

What is evaporation and examples?

Evaporation is described as the phase in which the water state takes place from the liquid to the gaseous or vapour state. An example of evaporation is the melting of a cube of ice.

Is evaporation physics or chemistry?

It is a physical change because it is going from the liquid phase to the gas phase.

What is evaporation very short answer?

Evaporation happens when a liquid turns into a gas. It can be easily visualized when rain puddles “disappear” on a hot day or when wet clothes dry in the sun. In these examples, the liquid water is not actually vanishing—it is evaporating into a gas, called water vapor.

What is evaporation Class 9 Example?

The process of a liquid changing into vapour (or gas) even its boiling point is called evaporation. The wet clothes dry due to evaporation of water present in them. Common salt is also recovered from sea-water by the process of evaporation.

What are 5 examples of evaporation?

  • Ironing Clothes. Have you ever noticed that ironing slightly damp clothes works best to get the wrinkles out?
  • Glass of Water.
  • Process of Sweating.
  • Line Drying Clothes.
  • Kettle Whistle.
  • Drying of Wet Tables.
  • Drying of a Mopped Floor.
  • Melting a Glass of Ice.

What is the best example of evaporation?

Drying clothes in the sun is one of the most common examples of evaporation. The water present in the clothes when they are washed (and hung on the line) is removed by the evaporation process.

What is the evaporation process called?

In hydrology, evaporation and transpiration (which involves evaporation within plant stomata) are collectively termed evapotranspiration. Evaporation of water occurs when the surface of the liquid is exposed, allowing molecules to escape and form water vapor; this vapor can then rise up and form clouds.

How does evaporation take place?

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. Evaporation is a very important part of the water cycle.

What type of change is evaporation?

Melting, evaporation and condensation are examples of physical change, or change of state, and are distinct from changes that cause new materials to form through a chemical reaction.

What is the importance of evaporation?

Answer and Explanation: Evaporation is an essential part of the water cycle because it allows large amounts of water to move from bodies of water on Earth up into the atmosphere. Water vapor in the atmosphere condenses into clouds, which move around the globe and release precipitation.

What is evaporation Class 3 Short answer?

“Evaporation” The conversion of water from a liquid to a gas. Solar energy drives evaporation of water from the ocean. The evaporated water changes from a liquid form into water vapor a gaseous form.

What is meant by evaporation Class 6?

The process of conversion of water into vapor is called Evaporation. For example, the separation of salt from water is done by the evaporation of seawater.

What is factor of evaporation?

Factor/factors affecting evaporation are. (a) surface area. (b) humidity and wind. (c) temperature.

What is evaporation Class 9 Chapter 2?

Evaporation is a process which is used to separate a solid substance dissolved in liquid. It is based on the fact that liquids vaporize easily whereas solids do not.

What is difference between boiling point and evaporation?

To summarize, evaporation is slower, occurs only from the surface of the liquid, does not produce bubbles, and leads to cooling. Boiling is faster, can occur throughout the liquid, produces lots of bubbles, and does not result in cooling.

What are the 10 examples of evaporation?

  • Drying Clothes under The Sun.
  • Ironing of Clothes.
  • Cooling Down of Hot Tea and Other Hot Liquids.
  • Wet Floors.
  • Melting of Ice Cubes.
  • Preparation of Common Salt.
  • Evaporation of Nail Paint Remover.
  • Drying of Wet Hair.

What are three application of evaporation?

Applications of evaporation Wet handkerchief on the forehead of a person having high fever relieves the patient. Pouring tea in the saucer helps it cool faster. Earthen pots help in the cooling of drinking water in summers.

Is boiling water evaporation?

When water is heated it evaporates, which means it turns into water vapor and expands. At 100℃ it boils, thus rapidly evaporating. And at boiling point, the invisible gas of steam is created. The opposite of evaporation is condensation, which is when water vapor condenses back into tiny droplets of water.

What is a non example of evaporation?

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.

Does tea evaporate?

The answer is, yes; tea can evaporate. Like any other liquid, tea is prone to evaporation. The rate of evaporation alters with the process used for storing the tea. However, it should be noted that tea cannot evaporate completely into thin air under fixed temperature and pressure.

Who discovered evaporation?

Nils Wallerius (1 January 1706 – 16 August 1764) was a Swedish physicist, philosopher and theologian. He was one of the first scientists to study and document the characteristics of evaporation through modern scientific methods.

What is the opposite of evaporation?

Condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of evaporation which is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase.

What is evaporation rate?

The evaporation rate is the ratio of the time required to evaporate a test solvent to the time required to evaporate the reference solvent under identical conditions. The results can be expressed either as the percentage evaporated within certain time frame, the time to evaporate a specified amount, or a relative rate.

What is temperature in evaporation?

The evaporation temperature is set at 140 °C to ensure the minimum temperature difference of the evaporator.

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