Volatility in physics is a measure of the speed at which a chemical element or chemical compound evaporates. Higher volatility indicates faster evaporation. Physics (from the Greek, (phúsis), nature and (phusiké), knowledge of nature) is the science concerned with the discovery and understanding of the fundamental laws which govern matter, energy, space, and time. ... The periodic table of the chemical elements (this version outdated on October 13, 2006) A chemical element, often called simply an element, is a substance that cannot be decomposed or transformed into other chemical substances by ordinary chemical processes. ... A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition. ... This article or section is in need of attention from an expert on the subject. ...

Although usually applying to liquids, volatility can apply to solid materials such as dry ice (solid Carbon Dioxide) and ammonium chloride, which can change directly from solid to vapor without becoming liquid, also known as sublimation. Dry ice is a genericized trademark for solid (frozen) carbon dioxide. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ... Ammonium chloride or Sal Ammoniac (chemically ammonium chloride (NH4Cl); also nushadir salt, zalmiak, sal armagnac, sal armoniac, salmiakki, salmiak and salt armoniack) is, in its pure form, a clear white water-soluble crystalline salt with a biting taste. ... Sublimation of an element or substance is a conversion between the solid and the gas phases with no intermediate liquid stage. ...

See also

• Clausius-Clapeyron relation

The Clausius-Clapeyron relation, in thermodynamics, is a way of characterizing the phase transition between two states of matter, such as solid and liquid. ...

External links

• Volatility from ilpi.com