Liquid

liquidsliquid phaseliquid stateLiquid levelliquid-phasellevel of liquidaqDravamfluid content
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure.wikipedia
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Solid

solidsssolid state
As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma).

State of matter

states of matterstatephysical state
As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
Four states of matter are observable in everyday life: solid, liquid, gas, and plasma.

Gas

gasesgaseousgaseous state
As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).

Condensed matter physics

condensed matterCondensed matter theorycondensed-matter physics
Therefore, liquid and solid are both termed condensed matter.
The most familiar examples of condensed phases are solids and liquids, which arise from the electromagnetic forces between atoms.

Fluid

fluidsanalysis of fluidsenergy fluids
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure.
Fluids are a phase of matter and include liquids, gases and plasmas.

Boiling point

normal boiling pointboiling pointssaturation temperature
When a liquid reaches its boiling point, the cohesive forces that bind the molecules closely together break, and the liquid changes to its gaseous state (unless superheating occurs).
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.

Supercooling

supercooledsupercoolsupercooled water
When the liquid reaches its freezing point the molecules will usually lock into a very specific order, called crystallizing, and the bonds between them become more rigid, changing the liquid into its solid state (unless supercooling occurs).
Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid.

Melting point

freezing pointmelting temperaturemelting
When the liquid reaches its freezing point the molecules will usually lock into a very specific order, called crystallizing, and the bonds between them become more rigid, changing the liquid into its solid state (unless supercooling occurs).
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid.

Bromine

Brbrominatedbromo
Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine.
It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas.

Plasma (physics)

plasmaplasma physicsplasmas
As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
The plasma state can be contrasted with the other states: solid, liquid, and gas.

Superheating

superheatedsuperheatdesuperheater
When a liquid reaches its boiling point, the cohesive forces that bind the molecules closely together break, and the liquid changes to its gaseous state (unless superheating occurs).
In physics, superheating (sometimes referred to as boiling retardation, or boiling delay) is the phenomenon in which a liquid is heated to a temperature higher than its boiling point, without boiling.

Emulsion

emulsifieremulsifiersemulsions
Important everyday liquids include aqueous solutions like household bleach, other mixtures of different substances such as mineral oil and gasoline, emulsions like vinaigrette or mayonnaise, suspensions like blood, and colloids like paint and milk.
An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable).

Paint

paintspaintedemulsion paint
Important everyday liquids include aqueous solutions like household bleach, other mixtures of different substances such as mineral oil and gasoline, emulsions like vinaigrette or mayonnaise, suspensions like blood, and colloids like paint and milk.
Paint is any pigmented liquid, liquefiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film.

Liquefaction of gases

liquefactiongas liquefactionliquefied
Many gases can be liquefied by cooling, producing liquids such as liquid oxygen, liquid nitrogen, liquid hydrogen and liquid helium.
Liquefaction of gases is physical conversion of a gas into a liquid state (condensation).

Liquid crystal

liquid crystalsnematicsmectic
Examples include liquid crystals, used in LCD displays, and biological membranes.
Liquid crystals (LCs) are a state of matter which has properties between those of conventional liquids and those of solid crystals.

Liquid helium

heliumliquidliquified helium
Many gases can be liquefied by cooling, producing liquids such as liquid oxygen, liquid nitrogen, liquid hydrogen and liquid helium.
At standard pressure, the chemical element helium exists in a liquid form only at the extremely low temperature of −269 °C (about 4 K or −452.2 °F).

Body fluid

bodily fluidbodily fluidsbody fluids
Body fluids are water based solutions.
Body fluids, bodily fluids, or biofluids are liquids within the human body.

Lubricant

lubricantslubricating oillube oil
In tribology, liquids are studied for their properties as lubricants.

Ink

printing inkinksindelible ink
They are found in cosmetics, inks, and liquid dye lasers.
Ink is a liquid or paste that contains pigments or dyes and is used to color a surface to produce an image, text, or design.

Dye laser

dye laserspulsed dye laserdye
They are found in cosmetics, inks, and liquid dye lasers.
A dye laser is a laser which uses an organic dye as the lasing medium, usually as a liquid solution.

Chemical element

elementelementschemical elements
Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine.
Another commonly used basic distinction among the elements is their state of matter (phase), whether solid, liquid, or gas, at a selected standard temperature and pressure (STP).

Mixture

mixturesmixingadmixture
Important everyday liquids include aqueous solutions like household bleach, other mixtures of different substances such as mineral oil and gasoline, emulsions like vinaigrette or mayonnaise, suspensions like blood, and colloids like paint and milk.

Evaporation

evaporateevaporatedevaporates
The heat can be removed by channeling the liquid through a heat exchanger, such as a radiator, or the heat can be removed with the liquid during evaporation.
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.

Convection

convectiveconvection currentsconvection current
In addition to better conductivity, because warmer fluids expand and rise while cooler areas contract and sink, liquids with low kinematic viscosity tend to transfer heat through convection at a fairly constant temperature, making a liquid suitable for blanching, boiling, or frying.
Convection is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).

Boiling

boiledboilboiling water
In addition to better conductivity, because warmer fluids expand and rise while cooler areas contract and sink, liquids with low kinematic viscosity tend to transfer heat through convection at a fairly constant temperature, making a liquid suitable for blanching, boiling, or frying.
Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.