Boiling and evaporation, while sharing the same general idea of water transforming from a liquid state into a gaseous state, overall, they are two very different concepts overall. These terms cannot be used interchangeably.
By definition, boiling is the rapid vaporization of a liquid once it has reached its set boiling point. Most liquids have a boiling point that creates agitated, more rapid movement within the particles of the substance.
Boiling vs Evaporation
The main difference between Boiling and Evaporation is that boiling refers to any liquid which turns into gas after continuous heating. Evaporation refers to a natural process where liquid changes into gas due to high temperature or pressure. Boiling produces bubbles, but evaporation does not produce bubbles.
Evaporation can occur at any given moment, regardless of an increase in temperature. Leave a glass of water out on the countertop long enough, and watch as the water levels go down without any human interference.
Comparison Table Between Boiling and Evaporation
|Parameter of Comparison||Boiling||Evaporation|
|Definition||“Steaming or bubbling up under the action of heat”||“To change from a liquid or solid state into vapor”|
|Movement of Particles||Boiling creates an extremely rapid movement of water particles as this is an endothermic process which signifies the addition of heat to a substance.||Molecules are always moving, but at a much slower rate than boiling.|
|Natural or Unnatural?||Boiling is an unnatural process.||Evaporation is a natural process, it is typically known as the first step in the Water Cycle.|
|Where it Occurs||Occurs all throughout the liquid due to the addition of so much heat||Occurs at the surface of the liquid|
|Time||Shorter period of time||Takes longer to complete|
|Temperature||Requires a temperature that is greater than the boiling point||Requires little change in temperature|
|Energy Required||Lots of energy being added||Little to no energy being added|
What is Boiling?
Whether you set off to boil a pot of water or any other liquid, the addition of intense heat excites these liquid molecules into moving rapidly all throughout the substance.
All it takes for something to boil is when that liquid, or an object that was once a solid, reaches temperatures higher than their melting point and/or their boiling point.
The intensity of so much energy being added in order to make something boil causes molecules to separate, turn into gaseous molecules, which then promptly, are so lightweight that they can enter the atmosphere in less than a few seconds.
One of the key ways to determine when a liquid has transcended past its boiling point is when there is a clear formation of bubbles.
When the water has elevated beyond its boiling point, the heat energy given from some type of energy sources like a stove or a fire gets transferred to the water molecules, which get more excited and animated from the addition of energy.
Their rapid movement causes the molecules to have too much energy to stay together in their liquid state of matter.
With the intense temperatures breaking the bonds between the elements making up the molecules, the molecules are lightweight and are subject to become airborne.
When this occurs, they have entered from the liquid state of matter into gaseous molecules of water vapor, which then float to the surface in the form of air pockets, or bubbles, and get released into the air.
What is Evaporation?
Evaporation is a naturally occurring process that can be seen and experienced in the natural world. Ever seen thick clouds of fog rising over the surface of a lake of water or hovering above the ground?
Fog is evaporation to the extreme, where many particles of water are rising due to the difference in temperature of the air in comparison to the ground.
On a foggy morning, the sun has risen and the temperature of the air has become warmer than the internal temperature of the ground or body of water.
The reason foggy air feels so thick and suffocating to the skin is because of the number of water molecules being released into the air at once.
Molecules are always moving, and any addition of energy or thermal heat causes water molecules to bump into each other over and over again.
Any movement of molecules as they hit against one another transfers from one water molecule into another. This movement and transfer of energy results in one water molecules to be left with just a little less mass than the other.
This lighter molecule can break free from the surface where most heat has reached and evaporates into the air.
Main Differences Between Boiling and Evaporation
- Copyright law protects literary, dramatic, musical, and other similar artistic creations, whereas patent laws stress on protecting inventions.
- There is no need to register copyright because it comes into existence with its creation. Patents need to be registered by a national or international patent organization before they can be protected by the laws that govern it.
- The practice of the idea is the main objective of the patent. On the other hand, it’s the expression of the idea which is focused on the copyright end.
- Copyrights are the special rights given to the creator of the original work, which dismisses the performance and production of the work. Patents are legal grants given by the government to stop the manufacture and trading of the invention for a set duration of time.
- Copyright is usually granted for 50-70 years after the death of the original creator of the copyright. However, a patent which is valid to the author for 20 years.
Boiling, depending on the quantity of the liquid being boiled, and the amount of heat being transferred is what decides the amount of time that it takes for the substance to be converted entirely from a liquid state into a gaseous state of matter.
The more heat energy that is added to a substance will cause it to dissipate faster.
While in chemical terms, both boiling and evaporation are physical changes, boiling requires the presence of additional heat, provided by human interference more often than not.
Evaporation, on the other hand, occurs at any temperature whether it be gentle warming from the sun to the gradual shifts in temperature in a room at various points throughout the day.
Because boiling takes much more heat energy and is transferring it to the water molecules, the amount of time it would take to boil the entire amount of a liquid substance, such as water, would be drastically different than the time it would take the same amount of liquid to evaporate.
It takes a certain temperature to be reached in order for the set boiling point to be compromised but evaporation will happen naturally without manipulation.
Notice in the definitions, listed in the table above, that it takes the action of heat whereas one is a process of turning into a vapor.
Boiling and evaporation are on two different sides of the spectrum; the application of heat and one without any necessary application of heat.
The more information learned about these ideas, the more these concepts can be applied and noticed in everyday life.
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