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Difference between solid, liquid and gas

Everything that surrounds us, such as air, food, water, plants, animals, vehicles, clothes and so on, made of matter. The question is a collection of particles and everything that has mass and takes up space. There are three basic states of matter, ie solid, liquid and gas. States of matter take place because of variations in the molecules of matter. The size and shape of an object solid are defined.

However, if we talk about the other two states of matter, ie liquid and gas, i liquids flow to take the shape of the beaker and i gas yes they spread to completely fill the available volume. The main difference between solid, liquid and gas lies in their properties, which we will discuss in this article.

Comparative chart

Basis for the comparisonSolidoLiquidoGas
Sense The solid refers to a form of matter that has a structural rigidity and has a solid form that cannot be easily changed. The liquid is a substance, which flows freely, with a defined volume but without a permanent form. The gas refers to a state of matter, has no shape but conforms to the shape of the container, completely, in which it is inserted.
Shape and volume Fixed shape and volume. No fixed form but it has volume. N defined shape n volume.
Power lower average Higher
compressibilit Hard Almost difficult Easy
Arrangement of molecules Regular and strictly organized. Random and poorly organized at random. Random and more poorly organized.
fluidity It cannot flow Flows from highest to lowest level. Flows in all directions.
Molecular movement Negligible molecular motion Molecular motion Brownian Free, constant and random molecular motion.
Intermolecular space Much less Of Pi Great
Intermolecular attraction Maximum average Minimum
Speed ??of sound faster Faster than gas but slower than solid The lowest of all
storage No container needed for storage. It cannot be stored without a container. It needs a closed container for storage.

Definition of solid

By the term "solid" we mean the type of matter that stiffens in the structure and opposes the change in its shape and volume. The particles of a solid are closely linked and well arranged according to a regular pattern, which does not allow the particles to move freely from one place to another. The particles vibrate and twist continuously, but there is no movement, since they are too close to each other.

Since the maximum intermolecular attraction in solids, and since their fixed shape, and the particles remain, where they are set. In addition to this, the compression of the solid is very hard, since the spaces between the molecules are already much smaller.

Definition of liquid

A constant volume free flowing substance having a consistency called as the liquid. a type of matter that does not have its shape but takes the shape of the ship, in which it is contained. Contains small particles, held firmly by intermolecular bonds. One of the unique properties of the liquid is the surface tension, a phenomenon that makes the fluid possess the minimum surface.

The compression of the liquid is almost difficult, due to the smaller distance between the particles. The particles are closely related, but not as closely as in the case of the solid. Thus allowing the particles to move and mix with each other.

Definition of Gas

The gas described as a state of matter that spreads freely in all directions and fills the entire available space, regardless of quantity. consisting of particles that do not have a certain shape and volume. The particles can be single atoms or elemental molecules or compound molecules.

In gases, molecules are retained freely, and therefore there is a lot of space between molecules to move freely and constantly. Because of this feature, gas has the ability to fill any container, as well as being easily compressed.

Key differences between solid, liquid and gas

The difference between solid, liquid and gas can be clearly traced for the following reasons:

  1. A substance with structural rigidity and a solid form that cannot be easily changed called solid. A liquid similar to water, which flows freely, with a defined volume but without a permanent form, called liquid. The gas refers to a state of matter, has no shape but conforms to the shape of the container, completely, in which it is inserted.
  2. While solids have a certain shape and volume, liquids have only a defined volume but not shape, gases have no shape or volume.
  3. The highest energy level in gases, medium in liquid and lowest in solids.
  4. Compression of solids difficult, liquids are almost incompressible, but gases can be easily compressed.
  5. The molecular arrangement of solids is regular and narrow, but liquids have irregular and scattered molecular arrangement and gas, also have random and more sparse arrangement of molecules.
  6. The molecular arrangement in solids is well organized. However, the layers of molecules slide and slide over each other, in the case of liquids. In contrast, the particles in the gases are not organized at all, due to which the particles move randomly.
  7. When it comes to fluidity, solids cannot flow, however, liquids can flow and even from the highest level to the lowest level. Against this gas it flows in all directions.
  8. The spaces between the molecules and the kinetic energy are minimal in solids, in the liquid medium and in the maximum in gases. Hence, the movement of molecules is negligible in solids, while in liquids the irregular and random movement of molecules can be observed. Unlike gases, which have the free, constant and random movement of molecules.
  9. In solids, the particles are held firmly by a strong intermolecular attraction, although in liquids the attraction between the particles is intermediate. On the contrary, the particles are retained freely, because of the weak intermolecular attraction.
  10. The speed of sound is higher in solids, while the speed is slightly slower in liquids and the minimum in gases.
  11. Since solids have a defined shape and size, they do not require a container for storage. Liquids cannot be stored without a container. Conversely, a closed container is required for gas storage.

Change of state of matter

Matter changes its state from one form to another, when it is heated or cooled, which is covered by physical change. So, below are some processes through which you can change the state of the matter:

  • merger : process of changing the solid in the liquid.
  • Freezing : the process that helps in the transformation of liquid into solid.
  • Vaporization : process used to transform the liquid into gas.
  • Condensation : a process in which gas is transformed into liquid.
  • Sublimation : when the solid is transformed into gas, it is called as sublimation.
  • Layout : the process by which the gas is converted into solid.


So in this article we learned that matter exists in three states: solid, liquid and gas. In addition, the state of the interchangeable matter, i.e. the shape can be changed by changing temperature or pressure.