suspension (chemistry)

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Suspension (chemistry)
Suspension is a heterogenous fluid containing solid particles that are sufficiently large for sedimentation. Usually they must be larger than 1 micrometre . Unlike colloids, suspensions will eventually settle. An example of a suspension would be sand in water. The suspended particles are visible under a microscope and will settle over time if left undisturbed. This distinguishes a suspension from a colloid in which the suspended particles are smaller and do not settle. In a solution, the dissolved substance does not exist as a solid and the two are homogeneously mixed.
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Suspension (chimie)
En chimie, une suspension est une dispersion colloïdale (mixture) dans laquelle un produit finement divisé est combiné avec un autre produit, le premier étant si finement divisé et mélangé qu'il ne se redépose pas rapidement. Dans la vie quotidienne, la plupart des suspensions concernent celles de solides dans de l'eau liquide.
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Suspension (Chemie)
Eine Suspension (lat.: suspendere = aufhängen) ist ein heterogenes Stoffgemisch aus einer Flüssigkeit und darin fein verteilten Feststoffen, die in der Flüssigkeit mit geeigneten Aggregaten (Rührer, Dissolver, Naßmühle) sowie meist mit Hilfe zusätzlicher Dispergiermittel aufgeschlämmt und in der Schwebe gehalten werden. Eine Suspension ist eine grobdisperse Dispersion und tendiert zur Sedimentation und Phasentrennung.
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Zawiesina
Zawiesina - układ niejednorodny w postaci cząstek jednego ciała rozproszonych w drugim ciele, np. cząstek ciała stałego w gazie lub cząstek cieczy w cieczy. Jeżeli cząstki te są dostatecznie małe, mowa jest o układzie koloidalnym. Przykładami zawiesiny są: zupa, błoto, woda w jeziorze czy sok Kubuś. Średnica cząstek w zawiesinie jest większa od 100 nanometrów.
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Sospensione (chimica)
In chimica una sospensione è una miscela in cui un materiale finemente suddiviso è disperso in un altro materiale in modo tale da non sedimentare in tempo breve.A differenza della soluzione, in cui le due parti si uniscono intimamente dando origine ad un liquido perfettamente trasparente, nella sospensione la miscela è opaca e torbida, a causa dell'effetto Tyndall.La sospensione di gocce di liquido o particelle solide in un gas è chiamata aerosol. Nell'atmosfera è presente una sospensione comprendente polvere, fuliggine, sale marino, solfati di origine vulcanica e biologica, nitrati e goccioline d'acqua. La sospensione di sostanze lipofile in sostanze idrofile o viceversa è specificamente detta emulsione.
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