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'''Liquid''' is the state of [[matter]] in which the constituent [[molecule]]s are not constrained in their relative location to each other, but take up a fixed volume.

'''Liquid''' is a state of [[matter]] in which the constituent [[molecule]]s are not constrained in their relative location to each other. In the way it flows, a liquid behaves similarly to a [[gas]]. Unlike a gas it occupies a nearly fixed volume, regardless of the pressure.  Where in contact with a gas, a liquid will be bounded by a well-defined surface, whose strength is described by a property called [[surface tension]]. Surface tension is responsible for most of the phenomena we associate with liquids, including wetting to surfaces, and the tendency of small droplets to form spheres.  

[[Water]] is a well known liquid at room [[temperature]] and [[pressure]].

[[Water]] is a well known liquid at room [[temperature]] and [[pressure]].