Examples of Colloids

We explain that what are examples of colloids in chemistry? The name colloid comes from the Greek root kolas which means it can stick . This name refers to one of the main properties of colloids: their spontaneous tendency to aggregate or form clots .The colloids , also known as sols , are mixtures of one liquid solvent and solid solute , which is granulated , in an amount sufficient to disperse and simultaneously give specific physical properties to the solution. Against the light, the solute particles can be perceived as a coloration in the solvent. This uniformity in their distribution distinguishes colloids from ideal solutions and suspensions. examples of colloids in chemistry

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The solid solute particles do not completely dissolve in the solvent, but neither are they so heavy that they settle to the bottom of the container. The mixture then behaves in new terms: the solvent takes the name of the dispersing phase , responsible for keeping the solute or dispersed phase completely distributed within it. The optical applications are common in these mixtures, since the light collides with particles of the dispersed phase.Colloids are widely used in medical treatments. When a person has a deficiency or a seizure, an IV is given to regulate the levels of the substance that is lacking. The colloids are sufficiently concentrated and with a uniformity in their composition such that each milliliter of serum is identical to the previous one. This ensures that the nutrient is available in the ideal amount while the patient recovers.When an intravenous colloid is administered, it is guaranteed that the levels will return to normal in the affected person. Among the most important are dextrans, which are polymers that have around 200,000 glucose molecules in their chain. This allows an almost immediate availability when the person has had a decrease in their levels of this carbohydrate. The doctor will determine the amount of substance to be supplied, according to determined parameters.

examples of colloids in chemistry20 examples of colloids

  1. Blood plasma
  2. Albumin
  3. Dextrans
  4. Hydroxyethyl Starch (AHE)
  5. Jellies
  6. Polygelin
  7. Modified fluid gelatin
  8. Oxypogelatin
  9. Painting
  10. Milk examples of colloids in chemistry
  11. Mayonnaise
  12. Cheese
  13. Butter
  14. Whipped cream
  15. Living tissues
  16. Automotive lubricants
  17. Shaving foam
  18. Silver-based liquid food sanitizer
  19. Intravenous serums
  20. Oral electrolytes examples of colloids in chemistry

More Examples of Colloids examples of colloids in chemistry

  • Dust floating in air → fluid phase: air, dispersed phase: powder
  • Smoke → fluid phase: air, dispersed phase: solid particles product of combustion
  • Fog → fluid phase: air, dispersed phase: microscopic water droplets
  • Aerosol → fluid phase: air, dispersed phase: sprayed liquid droplets
  • Beer foam → fluid phase: beer liquid, dispersed phase: microscopic air bubbles
  • Shaving foam  → fluid phase: shaving liquid, dispersed phase: microscopic air bubbles
  • Cream → fluid phase: curdled milk, dispersed phase: microscopic air bubbles
  • Pumice stone → fluid phase: solid rock, dispersed phase: microscopic air bubbles
  • Milk → fluid phase: water, dispersed phase: fat, proteins, minerals, carbohydrates …
  • Gelatin → fluid phase: collagen, dispersed phase: water and mineral particles
  • Dust floating in air → fluid phase: air, dispersed phase: powder
  • Cheese → fluid phase: milk rennet, dispersed phase: water
  • Ink → fluid phase: water, dispersed phase: solid pigments
  • Marker or Marker → fluid phase: alcohol, dispersed phase: solid pigments
  • Ruby → fluid phase: aluminum oxide, dispersed phase: iron or chromium particles
  • Blood → fluid phase: water, dispersed phase: blood plasma
  • Fruit juice → fluid phase: water, dispersed phase: fiber particles, hydrates, vitamins …
  • Clay, Stained glass , Insecticides , Cement, Meringue , Foam gum , Butter , Ice cream , Toothpaste , Detergent , Soap , Mud , Colored water , Whipped cream , Clouds , Urine , Jellies , Lubricant , Adhesives , PearlsBone tissue , Mayonnaise , Jelly bean …

Although the colloid par excellence is one in which the continuous phase is a liquid and the dispersed phase is made up of solid particles, colloids can be found whose components are in other states of aggregation. The following table lists the different types of colloids according to the state of their continuous and dispersed phases:

Scattered phase
Continuous phase Gas It is not possible because all gases are soluble in each other Liquid spray,

Examples: fog, haze

Solid spray,

Examples: Smoke, airborne dust

Liquid Foam ,

Examples: Shaving foam

Emulsion ,

Examples: Milk, mayonnaise sauce, hand cream, blood

Colloidal dispersion ,

Examples: Paintings, India ink

Solid Solid Foam,

Examples: Pumice stone, Aerogeles

Gel ,

Examples: Jelly, gummy, cheese

Solid sun,

Examples: Ruby crystal

Currently, and due to its industrial and biomedical applications, the study of colloids has gained great importance within physical chemistry and applied physics. Thus, numerous research groups around the world are dedicated to the study of optical, acoustic, stability properties and their behavior against external fields. In particular, the electrokinetic behavior (mainly electrophoretic mobility measurements) or the conductivity of the whole suspension. examples of colloids in chemistry

In general, the study of colloids is experimental, although great efforts are also made in theoretical studies, as well as in the development of computer simulations of their behavior. In most colloidal phenomena, such as conductivity and electrophoretic mobility, these theories only reproduce reality in a qualitative way, but the quantitative agreement is still not completely satisfactory.

Properties of colloid solutions

Its particles cannot be observed with the naked eye.

We can define colloids as those systems in which one component is dispersed in another, but the dispersed entities are much larger than the solvent molecules. examples of colloids in chemistry

The filters that cannot pass through are semi-permeable membranes , such as cellophane and collodion. Its particles show Brownian motion and the Tyndall effect. They are opalescent.

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