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Topic: Phase diagram

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In the News (Wed 23 Apr 14)

  Phase Diagram
As the substance is subjected to the temperature and pressure pairs that follow this line the solid and liquid phases to coexist in equilibrium.
As the substance is subjected to the temperature and pressure pairs that follow this line the solid and gas phases to coexist in equilibrium.
As the substance is subjected to the temperature and pressure pairs that follow this line the liquid and gas phases coexist in equilibrium.
invsee.asu.edu /ed/phase/phasefeat.htm   (549 words)

 Phase Changes: Phase Diagram   (Site not responding. Last check: 2007-10-13)
A phase diagram is common way to represent the various phases of a substance and the conditions under which each phase exists.
For the liquid and gas phases, the shade of the color is related to its density.
The fl line at the lower right is not part of the phase diagram and is employed to mark the accessible boundary in the diagram for the sample in the cylinder.
www.chm.davidson.edu /ChemistryApplets/PhaseChanges/PhaseDiagram.html   (297 words)

 Phase Diagrams
A phase change from Phase C to Phase B is known as:
A phase change from Phase A to Phase C is known as:
A phase change from Phase A to Phase B is known as:
www.sciencegeek.net /Chemistry/taters/phasediagram.htm   (189 words)

 Phase diagram - Wikipedia, the free encyclopedia
A triple point is, in a pressure-temperature phase diagram, the unique intersection of the lines of equilibrium between three states of matter, usually solid, liquid, and gas.
For a phase diagram with temperature on the vertical axis, a solidus is a line below which the substance is stable in the solid state.
In liquid crystal physics, phase diagrams are used in the case of mixing of nematogenic compounds to distinguish between the isotropic liquid phase, the nematic liquid phase.
en.wikipedia.org /wiki/Phase_diagram   (893 words)

 Phase Diagram for Water - Chart - MSN Encarta
Phase Diagram for Water - Chart - MSN Encarta
Phase diagrams, like this phase diagram for water, show whether a substance exists as a vapor, liquid, or solid at a given temperature and pressure.
The point where the three lines intersect in a phase diagram shows the pressure and temperature where the solid, liquid, and vapor all exist in equlibrium.
encarta.msn.com /media_461541579/Phase_Diagram_for_Water.html   (75 words)

 Phase diagram of water and ice   (Site not responding. Last check: 2007-10-13)
A phase diagram shows the preferred physical states of matter at different temperatures and pressure.
All the crystalline phases of ice involve the water molecules being hydrogen bonded to four neighboring water molecules.
Other phase diagrams for water are presented elsewhere [681].
www.lsbu.ac.uk /water/phase.html   (1211 words)

 Phase Diagrams   (Site not responding. Last check: 2007-10-13)
Equilibrium can exist not only between the liquid and vapor phase of a substance but also between the solid and liquid phases, and the solid and gas phases of a substance.
A phase diagram is a graphical way to depict the effects of pressure and temperature on the phase of a substance:
The line between the solid and liquid phases indicates the melting temperature of the solid as a function of pressure
wine1.sb.fsu.edu /chm1045/notes/Forces/Phase/Forces06.htm   (386 words)

 Phase Changes
Transitions between solid, liquid, and gaseous phases typically involve large amounts of energy compared to the specific heat.
The data for the vaporization phase change presumes that the pressure is one standard atmosphere.
In discussing the energy of the phase changes in water, we found that the potential energy is treated as a negative quantity.
hyperphysics.phy-astr.gsu.edu /hbase/thermo/phase.html   (747 words)

 Phase Changes: Phase Diagram: Part 1   (Site not responding. Last check: 2007-10-13)
A phase diagram is a plot of pressure (P) vs temperature (T) in which lines on the diagram divide the plot into different regions.
Although a substance has only one liquid and one gas phase, it is possible to have multiple solid phases corresponding with different arrangements and orientations of molecules in the crystal.
At the bottom of the diagram, a set of conditions (temperature and pressure) are shown.
www.chm.davidson.edu /ChemistryApplets/PhaseChanges/PhaseDiagram1.html   (217 words)

 CMS—Unraveling the Phase Diagram of Plutonium   (Site not responding. Last check: 2007-10-13)
In particular, the highly unusual electronic structure of plutonium is responsible for one of the most complex phase diagrams of any element in the periodic table.
Their calculations have predicted some properties such as density variations for plutonium and plutonium–gallium alloys that are intriguing and provide an explanation for some of the decades-old puzzles in plutonium physical metallurgy.
Each phase of plutonium has been examined computationally by beginning with a structure based on available experimentally measured parameters including bond lengths, crystal structures, magnetic moments, and others.
www-cms.llnl.gov /s-t/pu-phase_diagram.html   (973 words)

 Iron Phase Diagram
The left side of the diagram represents pure iron and the right hand of the diagram represents an alloy with 6,67% C. which result on cooling in the formation of Cementite.
The phase diagram shown is therefore a metastable phase.
Below is an Isothermal Transformation (IT) diagram, also called a TTT (Time, Temperature, Transformation) curve for a eutectoid steel test piece which has been rapidly cooled in a bath at a set temperature, held for a time and then water quenched.
www.roymech.co.uk /Useful_Tables/Matter/Phase_diagram.html   (974 words)

 Phase diagram   (Site not responding. Last check: 2007-10-13)
A phase diagram or phase space is a useful construct used in mathematics and physics to demonstrate and visualise the changes in a given system.
Time is not considered to be one of the dimensions but rather is allowed to flow letting the system (which is represented as a single point moving through the phase space) evolve.
A phase space may contain very many dimensions, For instance a gas containing many molecules may require a separate dimension for each particle's x, y and z positions and velocities as well as any number of other properties.
www.guajara.com /wiki/en/wikipedia/p/ph/phase_diagram.html   (145 words)

 phase diagrams of pure substances
This is the phase diagram for a typical pure substance.
Under the set of conditions at 1 in the diagram, the substance would be a solid because it falls into that area of the phase diagram.
The phase diagram shows that the water would first freeze to form ice as it crossed into the solid area.
www.chemguide.co.uk /physical/phaseeqia/phasediags.html   (2266 words)

 Phase Diagram   (Site not responding. Last check: 2007-10-13)
Purpose: Show the available phases, phase boundaries, and triple points for a compound.
Phase diagram shows evaluated triple points, critical point, and phase boundaries, as well as the experimental phase boundary pressure values.
A corresponding phase, boundary, or triple point will be highlighten on the tree.
www.nist.gov /srd/webguide/nist103/FDiagram.htm   (160 words)

 Phase diagram (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-10-13)
Phase diagram all practical filters is itself in the allpass filters is itself in the same amount.
diagram with the japan academy science and therapies to produce a stereo phase diagram phaser.
Phase diagram the edge of vaporization at very low temperature form for obtaining your own.
phase.centuryphotomedia.com.cob-web.org:8888 /phase-diagram.html   (615 words)

 Interactive Phase Diagram
If you click on a blue circle on this interactive phase diagram, it will show you a representation of the microstructure present at that composition and temperature.
To make things more interesting, see if you can use your knowledge of phase diagrams to predict the structure before you click on the circle.
Click the cicle on the phase diagram that corresponds to the microstructure shown.
www.soton.ac.uk /~pasr1/interact.htm   (560 words)

 Phase Diagram   (Site not responding. Last check: 2007-10-13)
The triple point is the temperature and pressure at which all three phases can exist in equilibrium.
The heat of vaporization is the amount of energy given off when a gas liquifies (or the amount of energy needed to vaporize the liquid).
The same diagram for water shows the characteristic negative slope on the solid-liquid equilibrium line which accounts for why water floats.
www.chemistrycoach.com /Phase_diagram.htm   (283 words)

 phase diagram - HighBeam Encyclopedia   (Site not responding. Last check: 2007-10-13)
PHASE DIAGRAM [phase diagram] graph that shows the relation between the solid, liquid, and gaseous states of a substance (see states of matter) as a function of the temperature and pressure.
Find newspaper and magazine articles plus images and maps related to "phase diagram" at HighBeam.
Associative polymer/latex dispersion phase diagrams II: HASE thickeners.
www.encyclopedia.com /doc/1E1-phasedia.html   (262 words)

 Phase Diagrams & Computational Thermodynamics
Between 1982 and 1990, an international effort to evaluate binary phase diagrams was coordinated by the Metallurgy Division and ASM.
A phase diagram is the representation of phase equilibria present in a system as function of the controlling variables, typically composition and temperature.
Computational Thermodynamics is the discipline by which phase diagrams are generated by analysis of the basic thermodynamic properties of the system.
www.metallurgy.nist.gov /phase   (255 words)

 Phase Diagrams - home page
Phase Diagrams, which indicate the phases present at a given temperature and composition, have often proved a difficult concept to understand.
These Web pages provide a simple guide to phase diagrams that can supplement the explanations that you receive from lectures and books.
If you are new to phase diagrams, you should follow these links in order, working through each section before returning to this page.
www.soton.ac.uk /~pasr1   (82 words)

 Solid Solution Phase Diagram
The solid solution phase diagram explains the behavior of chemical solid solution series, such as the transition from high temperature, calcium-rich plagioclase to low temperature sodium-rich plagioclase, or the transition from high temperature magnesium-rich to low temperature iron-rich crystals in ferromagnesium minerals (e.g.
The diagram is divided into three fields, all liquid, liquid + crystal, all crystal.
To determine the composition of the first crystal move horizontally across the diagram to the solidus line.
csmres.jmu.edu /geollab/Fichter/IgnRx/SolidSol.html   (1120 words)

 FactSage.com - Phase Diagram module
is a generalized module that permits one to calculate, plot and edit unary, binary, ternary and multicomponent phase diagram sections where the axes can be various combinations of T, P, V, composition, activity, chemical potential, etc. The resulting phase diagram is automatically plotted by the Figure module.
2 bottom) where the user selects the type of diagram (Y vs X, or Gibbs triangle), the type of axes (composition, activity and chemical potential), the possible composition variables, and the limits and constants of the phase diagram.
Optionally the figure can be manipulated: tie lines can be inserted in the plot, the equilibrium compositions and phase amounts at any point on the diagram can be calculated and shown in a table, and the diagram can be edited (add experimental data points, text, change font and colors etc.).
www.crct.polymtl.ca /factsage/fs_pd.php   (717 words)

 phase diagram — Infoplease.com
phase diagram, graph that shows the relation between the solid, liquid, and gaseous states of a substance (see
The eye diagram: a new perspective on the project life cycle.
Transition diagrams for a liquid crystalline thermoset containing a rigid-rod epoxy.
www.infoplease.com /ce6/sci/A0838710.html   (220 words)

 Typical phase diagram   (Site not responding. Last check: 2007-10-13)
The figure shows a typical phase diagram of an element or a simple compound.
The stability of solid, liquid and gas phases depends on the temperature and the pressure.
The phase diagram of helium differs essentially from the typical one.
ltl.tkk.fi /research/theory/typicalpt.html   (159 words)

 Phase diagram of elastic manifolds
For some range of d and N, if the disorder is weak enough, the thermal phase continues to exist, but inevitably undergoes a transition to the disorder-dominated phase as the randomness is increased.
By rough analogy to the bulk phases of the magnet we discussed earlier, the thermal fixed point describes the high-temperature phase of the system, where entropy and not energy is the dominant source of fluctuations.
The strong disorder phase is presumably energy dominated, and we might guess that it is an ordered phase described by a zero-temperature fixed point.
online.itp.ucsb.edu /online/lnotes/balents/node11.html   (1287 words)

 Moon Phase Diagram   (Site not responding. Last check: 2007-10-13)
The Moon phase diagram shows two views: the Earth-Moon system Viewed from Space (showing the Moon in eight different positions in its orbit around the Earth); and the Moon as Viewed from Earth.
Unless otherwise instructed, use the broad edge of a pencil to shade the diagram.
Use the broad edge of your pencil to shade the appearance of the Moon.
www.wsanford.com /~wsanford/exo/mp_diagram_directions.html   (342 words)

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