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Phase matter - Definition | A Wisdom Archive on Phase matter - Definition | | Phase matter - Definition A selection of articles related to Phase matter - Definition | |
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Phase matter, Phase matter - Definition, Phase matter - Emergence and universality, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Metastable phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Phase equilibrium, Gel, Condensed matter physics, Cooling curve, Supercooling, Superheating, Multiphasic liquid
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ARTICLES RELATED TO Phase matter - Definition | | | |  Phase matter - Definition: Encyclopedia II - Phase matter - DefinitionEven though the concept of phases is widely-used in the physical sciences, it is not easy to define precisely. Before presenting the general definition, we will provide two common examples of phase phenomena: firstly, the ordinary solid, liquid, and gas phases of matter; secondly, the paramagnetic and ferromagnetic phases of magnetic materials.
Phase matter - Example 1: Solid liquid and gas phases.
Water (H2O) is composed of water molecules, each of which is an oxygen atom attached to two hydrog ...
See also:Phase matter, Phase matter - Definition, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Metastable phases, Phase matter - Phase equilibrium, Phase matter - Emergence and universality Read more here: » Phase matter: Encyclopedia II - Phase matter - Definition |
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| | | | Phase matter - Definition: Encyclopedia II - Phase matter - Emergence and universality Phases are emergent phenomena produced by the self-organization of a macroscopic number of particles. Typical samples of matter, for example, contain around 1023 particles (of the order of Avogadro's number). In systems that are too small -- even, say, a thousand atoms -- the distinction between phases disappears, since the appearance of non-analyticity in the free energy requires a huge, formally infinite, number of particles to be present.
One might ask why real systems exhibit phases, since they are not actually infinite ...
See also:Phase matter, Phase matter - Definition, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Metastable phases, Phase matter - Phase equilibrium, Phase matter - Emergence and universality Read more here: » Phase matter: Encyclopedia II - Phase matter - Emergence and universality |
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| | | | Phase matter - Definition: Encyclopedia II - Phase matter - Phase equilibrium The distribution of kinetic energy among molecules is not uniform, and it changes randomly. This means that at, say, the surface of a liquid, there may be an individual molecule with enough kinetic energy to jump into the gas phase. Likewise, individual gas molecules may have low enough kinetic energy to join other molecules in the liquid phase. This phenomena means that at any given temperature and pressure, multiple phases may co-exist.
For example, under standard conditions for temperature and pressure, conditions, a bowl of liquid ...
See also:Phase matter, Phase matter - Definition, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Metastable phases, Phase matter - Phase equilibrium, Phase matter - Emergence and universality Read more here: » Phase matter: Encyclopedia II - Phase matter - Phase equilibrium |
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| | | | Phase matter - Definition: Encyclopedia II - Phase matter - Metastable phases Sometimes a substance or mixture can be heated, compressed, etc., beyond the point at which it would normally exhibit a phase change, but without actually triggering the change. Examples include supercooling, superheating, and supersaturation.
Such metastable states may sometimes be considered as phases, although strictly speaking they are not because they are unstable. For example, each polymorph of a given substance is usually only stable over a specific range of conditions. For example, diamond is only stable at extremely high pres ...
See also:Phase matter, Phase matter - Definition, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Metastable phases, Phase matter - Phase equilibrium, Phase matter - Emergence and universality Read more here: » Phase matter: Encyclopedia II - Phase matter - Metastable phases |
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| | | | Phase matter - Definition: Encyclopedia II - Phase matter - Phase diagrams Main article: Phase diagram
The different phases of a system may be represented using a phase diagram. The axes of the diagrams are the relevant thermodynamic variables. For simple mechanical systems, we generally use the pressure and temperature. The following figure shows a phase diagram for a typical material exhibiting solid, liquid and gaseous phases.
The markings on the phase diagram show the points where the free energy is non-analytic. The open spaces, where the free energy is analytic, correspond to the phases. The phases are separated by lines of non-analyticity, where phase transitions o ...
See also:Phase matter, Phase matter - Definition, Phase matter - Example 1: Solid liquid and gas phases, Phase matter - Example 2: Magnetic phases, Phase matter - General definition of phases, Phase matter - Other examples of phases, Phase matter - Phase diagrams, Phase matter - Metastable phases, Phase matter - Phase equilibrium, Phase matter - Emergence and universality Read more here: » Phase matter: Encyclopedia II - Phase matter - Phase diagrams |
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