Examples of Colloids - Hydrophilic Colloids, Mixtures, Examples, FAQs

Examples of colloids or example of colloidal solution

Q- Colloid examples?

It is a type of heterogeneous mixture in whice particles size are intermediate between those of a solution and that of a suspension. The dispersed particles will be spread evenly while through the dispersion medium, which can be in a solid state, or in liquid state , or in gaseous state. Because the dispersed particles within a colloid are not as big as that those are present in a suspension, due to this property, they do not settle down upon standing. Another property of a colloidal system that will be observed when they are studied under a light microscope.

This event is also known to be Brownian motion and this is caused due to collisions between small colloidal particles with the molecules of dispersion medium. Fog is an example of colloidal system of liquid dispersed medium in gas. Butter is a colloid formed when water is dispersed in fat. Hydrophilic colloids and hydrophobic colloids are other examples of colloid. Solid foam examples are styrofoam and pumice.

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Q- Shaving cream is a colloidal solution of ?

Shaving cream is a colloidal solution of gas in liquid where gas is dispersed phase and liquid is dispersion medium. Shaving cream is also a type of colloids that belongs to class foam. Colloids have many dissimilarities in respect to solutions because their dispersed particles are much larger in comparison to the dispersed particles of solution. We can not be able to separate the dispersed particles from dispersion medium within a colloid mixture through filtration but they will scatter light, and this phenomenon is called as Tyndall effect .

Q- Example of sol?

sol is a also a type of colloidal mixture that is made out of solid particles when mixed continuous within liquid medium. Sols are very stable and also shows the Tyndall effect. Examples of sol includes blood, also pigmented ink, cell fluids, antacid, paints and mud. Sol meaning medical is colloid.

Q- Tyndall Effect?

When light is allowed to passed through a true solution, then light will not deflect because the dissolved particles are too small to deflect the light. But in case of, the dispersed particles present in a colloid, they are larger, and they will deflect light. The Tyndall effect is the phenomenon through which scattering of visible light will take place by colloidal particles.

You must have noticed a light beam when it passes through fog, or through smoke, or through dust particles suspended within air then scattering of light will takes place. All these three are examples of colloids i.e. Suspensions can also scatter light, but there is a condition that the number of suspended particles will have to be sufficiently large, the suspension can also be opaque and then light scattering through it would not occurs.

Q- What is Natural colloid ?

It is a type of heterogeneous mixture in which particles size are intermediate between those of a solution and that of a suspension. The dispersed particles will be spread evenly while through the dispersion medium, which can be in a solid state, or in liquid state , or in gaseous state. Because the dispersed particles within a colloid are not as larger as that those are present in a suspension, due to this property, they do not settle down upon standing.

Colloids have many dissimilarities in respect to solutions because their dispersed particles are much larger in comparison to the dispersed particles of solution. We can not be able to separate the dispersed particles from dispersion medium within a colloid mixture through filtration but they will scatter light, and this phenomenon is called as Tyndall effect .

Examples :- mixture of dust and smoke within air, smog, etc.

Q- Examples of Colloids?

The table below are the examples of colloidal systems, you must have noticed most of them. The dispersed phase indicates the particles of colloid solution, while the dispersion medium shows the material in which the particles are scattered.

Another property of a colloidal system that will be observed when they are studied under a light microscope. The reflecting brief flashes of light just because of colloidal particles that are moving in a rapid and random fashion. This event is known to be Brownian motion, and this is caused due to collisions between small colloidal particles with the molecules of dispersion medium.

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Hydrophilic colloids

Q- Example of solid sol?

sol is a also a type of colloidal mixture that is made out of solid particles when mixed continuous within liquid medium. Sols are very stable and also shows the Tyndall effect. Examples of sol includes blood, also pigmented ink, cell fluids, antacid, paints and mud.

Emulsions

Butter and mayonnaise when mixed are belongs to a class of colloids known as emulsions. An emulsion is also a colloidal mixture belongs to class colloidal dispersion of a liquid with a liquid or within a solid medium. To stabilize emulsion there must be a need for emulsifying agent. Mayonnaise is combination of a part of oil and vinegar. Because oil is nonpolar and vinegar is polar and also an aqueous solution, these two components will not mix and can be separate quickly into layers. But after the addition of egg yolk to the mixture then the mixture will become stable and then will not forms layer.

Egg yolk has the property to interact with both the polar vinegar and the nonpolar oil. And here egg yolk is known as emulsifying agent. Soaps also acts as an emulsifying agent in case of grease and water. Grease will not be simply rinsed off from our hands or another surface because it is insoluble. whereas, the presence of soap will stabilizes a grease and water mixture also due to presence of polar hydrophilic end and non-polar hydrophobic end. This will allows the grease to be removed from our hands or from our clothes by washing through soapy water.

• Colloid: Colloid is a type of heterogeneous mixture where the particle size ranges between the particles present in solution and that of a suspension.

• Tyndall effect: This is the phenomenon through which scattering of light takes place with the help of colloidal particles.

• emulsion: A colloidal dispersion is a type of mixture of a liquid present in either a liquid or a solid.

• dispersion medium: The matrix in which the colloidal particles are distributed.

Colloid Mixtures Examples

Colloidal solution of liquid in liquid is known as. Colloidal solution of liquid in liquid is known as liquid emulsion and in this emulsion dispersed phase and dispersion medium both are liquids.

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NCERT Chemistry Notes:

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