mixture

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Related to Homogeneous mixture: Heterogeneous mixture

mixture,

in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical combination of two or more pure substances in a fixed, definite proportion. The components of a mixture retain their own chemical properties and may be present in any proportion. For example, iron filings may be mixed with powdered sulfur in any proportion, and even if very fine iron powder is carefully mixed with powdered sulfur, the two components are easily separated by means of a magnet; the magnet will draw out the iron from the mixture. However, if seven parts by weight of iron filings or powder are mixed with four parts by weight of powdered sulfur and the mixture is heated to a red glow (e.g., in a test tube, using a Bunsen burner), the iron and sulfur react to form the compound iron sulfide; they are chemically combined and are not readily separated. The iron sulfide is not attracted by a magnet. Mixtures are often classified as homogeneous or heterogeneous. Solutionssolution,
in chemistry, homogeneous mixture of two or more substances. The dissolving medium is called the solvent, and the dissolved material is called the solute. A solution is distinct from a colloid or a suspension.
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 and colloidscolloid
[Gr.,=gluelike], a mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance. The mixture is also called a colloidal system, colloidal solution, or colloidal dispersion.
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 are homogeneous mixtures. The components of a homogeneous mixture are too intimately combined to be distinguished from one another by visual observation. A suspensionsuspension,
in chemistry, mixture of two substances, one of which is finely divided and dispersed in the other. Common suspensions include sand in water, fine soot or dust in air, and droplets of oil in air. A suspension is different from a colloid or solution.
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 is a heterogeneous mixture. The particles in a heterogeneous mixture are coarse enough to be distinguished by visual observation. Alloys are mixtures of metals and may be either homogeneous or heterogeneous. The components of a mixture usually can be separated by physical means such as distillation, evaporation, precipitation, filtration, solvent extraction, or chromatography.

mixture

[′miks·chər]
(pharmacology)
A liquid medicine prepared by adding insoluble substances to a liquid medium, usually with a suspending agent.
(science and technology)
The product of mixing; components are not in a fixed proportion to each other.

mixture

1. The assembled, blended, commingled ingredients of mortar, concrete, or the like.
2. The proportions for their assembly.

mixture

1. Chem a substance consisting of two or more substances mixed together without any chemical bonding between them
2. Pharmacol a liquid medicine in which an insoluble compound is suspended in the liquid
3. Music an organ stop that controls several ranks of pipes sounding the upper notes in a harmonic series
4. the mixture of petrol vapour and air in an internal-combustion engine
References in periodicals archive ?
However, in high to full load operation a stoichiometric homogeneous mixture is still required.
A homogeneous mixture of pure LDPE and silica precipitate as catalyst was prepared in the ratio of 5 10 15 and 20% (w/w) ratio.
PWE and PNE appeared as homogeneous mixtures after solvent removal, while the 'Blended' system had a turbid 'milky' appearance.
As process materials are pumped through the elements, the input streams are split and diverted until a homogeneous mixture is achieved.
Under acceleration, the GDI engine injects fuel during the intake, producing a homogeneous mixture in the cylinders.
This bimodal distribution will be even more distinct in an actual compound, since the N110/N762 blend will not be a homogeneous mixture as it enters the mixing operation.
Homogeneous mixture is maintained by mixer below the stations.
In short mulling cycles, the conventional mixer cannot corret the sand variations and adequately disperse clay and new additives into an homogeneous mixture for the casting process.
The project will design and develop a prototype to produce calcium carbonate (CaCO3) nanoparticles and introduce them into the ceramic mass in order to obtain an homogeneous mixture.
With over 300 different formulations, rapid blending to a homogeneous mixture is a critical attribute that increases overall plant production.
Add the Syloblanc 34 with moderate agitation at room temperature until homogeneous mixture is obtained.
The Lindor mixer produces homogeneous mixture in very short mixing times.