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  • halochromism — halochromija statusas T sritis chemija apibrėžtis Organinių junginių spalvos pokytis dėl Luiso rūgščių poveikio. atitikmenys: angl. halochromism rus. галохромия …   Chemijos terminų aiškinamasis žodynas

  • Halochromism — A halochromic material is a material which changes colour when pH changes occur. The term ‘chromic’ is defined as materials that can change colour reversibly with the presence of a factor. In this case, the factor is pH. The pH indicators have… …   Wikipedia

  • halochromism — noun Any change in colour resulting from a chemical reaction, especially from a change in pH See Also: halochromic …   Wiktionary

  • halochromism — ˌhaləˈkrōˌmizəm noun ( s) Etymology: hal + chrom + ism : the phenomenon or property of the formation of strongly colored salts by addition of acids to colorless or faintly colored compounds …   Useful english dictionary

  • Chromophore — A chromophore is the part of a molecule responsible for its color. [1] The color arises when a molecule absorbs certain wavelengths of visible light and transmits or reflects others. The chromophore is a region in the molecule where the energy… …   Wikipedia

  • Chromism — In chemistry, chromism is a process that induces a change, often reversible, in the colors of compounds. In most cases, chromism is based on a change in the electron states of molecules, especially the π or d electron state, so this phenomenon is …   Wikipedia

  • Thermochromism — is the ability of substance to change color due to a change in temperature. A mood ring is an excellent example of this, but it has many other uses. Thermochromism is one of several types of chromism.The two basic approaches are based on liquid… …   Wikipedia

  • Crystal violet lactone — (CVL) is a leuco dye, a lactone derivate of crystal violet 10B. In pure state it is a slightly yellowish crystalline powder, soluble in nonpolar or slightly polar organic solvents. The central carbon in the leuco form is in a tetraedric… …   Wikipedia

  • halochromic — adjective Of, pertaining to, or exhibiting halochromism …   Wiktionary

  • Mechanochromism — The change of colour which occurs when chemicals are put under stress in the solid state by mecahnical grinding, crushing and milling; by friction and rubbing; or in the solid or solution state by high pressure or sonification is covered by the… …   Wikipedia

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