Information AboutLiquids |
| CATEGORIES ABOUT LIQUID | |
| condensed matter physics | |
| condensed phase | |
| viscosity | |
| volume | |
| phases of matter | |
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A liquid is one of the four main Phases Of Matter . It is a Fluid whose shape is usually determined by the container it fills. Its Volume is fixed under conditions of constant Temperature and Pressure . Furthermore, liquids exert pressure on the sides of a container as well as on anything within the liquid itself. This pressure is transmitted undiminished in all directions and increases with depth. If a liquid is at rest in a Uniform Gravitational Field , the Pressure at any point is given by : where:
Note that this formula assumes that the pressure at the free surface is zero, and that Surface Tension effects may be neglected. Liquids have traits of Surface Tension and Capillarity ; they generally expand when heated, and contract when cooled. Objects immersed in liquids are subject to the phenomenon of Buoyancy . Liquids at their respective Boiling Point change to Gas es, and at their Freezing Point s, change to Solid s. Via Fractional Distillation , liquids can be separated from one another as they Vaporise at their own individual boiling points. Cohesion between Molecule s of liquid is insufficient to prevent those at free surface from Evaporating . Glass at normal temperatures is ''not'' a " Supercooled Liquid ", but a solid. See the article on Glass for more details. LIQUID MEASURES Quantities of liquids are measured in units of Volume . SEE ALSO EXTERNAL LINKS |
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