Remember the science class in middle school. The teacher came into the classroom with a piece of ice that was about to melt and said that it was the solid form of water. He then warmed the ice in his hand in a bowl and said that it was the liquid form of water. He heated the water a little more and pointed to the steam that was coming out, saying that it was a gaseous state of water. In other words, substances are found in nature in the form of solid, liquid and gas. There’s also plasma, but that’s not our topic.
We know that solid and gas are compressed by applying a certain force among the three most known states of matter, solid, liquid and gas. So, can liquids be compressed? To answer this question, we need a little more than a middle school science lesson, because the answer to this question is hidden in the smallest parts of matter, atoms and molecules. Let’s take a closer look at the question of whether liquids can be compressed.
What are the differences between solid, liquid and gaseous states of matter?
Everything is matter and matter is made up of atoms. Small groups of atoms are called molecules. To make these definitions a little clearer, you can consider lego blocks. Imagine a lego set open in front of you, unassembled. You can think of each lego piece as atom, and the blocks you create from lego pieces as molecules.
The groups of atoms we call molecules are exactly why matter is solid, liquid or gaseous. If the atoms in this group are tightly bound together, the matter is in a solid state, if the atoms are a little looser, the matter is in the liquid state, if the atoms are very loose, the matter is in the gaseous state.
The best known example of solid, liquid and gaseous state is water. If you cool liquid water, which easily flows from a container to a container and takes the shape of the container in which it is placed, the atoms converge and turn into solid ice, but if you heat liquid water, the atoms move away from each other and turn into gaseous vapor.
How are solids and gases compressed?
The atomic groups of solid materials are already very close to each other. For this reason, if a force you apply on solid materials exceeds the reaction limit of the substance, the physical integrity will be destroyed. If you throw a filled plastic ball on the ground, it will bounce in response to the effect of the force, while if you step on the same ball with your foot, it will shatter. In other words, compression has a separate limit for each substance.
Gaseous substances are those that are most suitable for compression. To elaborate a little; You can only put 3 liters of liquid in a 3-liter closed container, but 600 liters of gas can be compressed into a 3-liter closed container. We see many examples of this in daily life. At this point, the important thing is to perform this compression process without creating a space for the gas to escape.
Can liquids be compressed?
Yes, it is possible to compress any form of matter, including liquid. However, what is important at this point is the force required for the compression process. Sometimes such a great force is required to compress a liquid substance that it may seem right to answer the question of whether liquids can be compressed, “No more!”
We see the greatest proof that liquids can be compressed in nature. The water mass at the bottom of the oceans is compressed by the water mass above it. Therefore, the water at the bottom of the oceans is much denser. When we consider the force of the ocean’s pressure on its bottom, you will understand why this seems impossible.
We can compress liquids, but during this process we encounter a result called viscous. This means that as the fluid is compressed, its flow resistance and density increase. In other words, the atoms of a liquid substance compressed under atmospheric pressure tend to slip less and the fluidity rate of water decreases.
Conclusion: leave it messy
The answer to the question of whether liquids can be compressed, which we asked in the title, is, yes, they can be compressed. However, at this point, there is a benefit-loss account that needs to be calculated. According to this calculation, the magnitude of the force required to compress liquids and the efficiency we get when we compress the liquid do not match. Considering that the liquid comes out of the liquidity when it is compressed, it is not a very productive job to work on it.
It is possible to say that liquids are more functional as they are until an efficiency system is created, such as 600 liters of gas occupying 3 liters of space. It makes one happy to imagine what could happen if one day we trap water vapor in this way and when we open the valve, we get a rapid cooling with no loss of liquid.
We answered the question of whether liquids can be compressed through solid, liquid and gaseous states of matter, and we talked about atoms and molecules, the smallest states of matter. All of what we have described are the results of scientific studies that have been carried out so far. Tomorrow, maybe all these things we said will be denied and who knows what kind of inventions we will come across.
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