A report on Colloid and Mixture

A diagram representing at the microscopic level the differences between homogeneous mixtures, heterogeneous mixtures, compounds, and elements

Colloidal silica gel with light opalescence

Examples of a stable and of an unstable colloidal dispersion.

Measurement principle of multiple light scattering coupled with vertical scanning

Tyndall effect in an opalite: it scatters blue light making it appear blue from the side, but orange light shines through; opal is a gel in which water is dispersed in silica crystals

Milk - emulsion of liquid butterfat globules dispersed in water

A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance.

- Colloid

A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

- Mixture

2 related topics with Alpha

Making a saline water solution by dissolving table salt (NaCl) in water. The salt is the solute and the water the solvent.

Solution (chemistry)

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Water is a good solvent because the molecules are polar and capable of forming hydrogen bonds (1).

In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances.

Counter examples are provided by liquid mixtures that are not homogeneous: colloids, suspensions, emulsions are not considered solutions.

A suspension of flour mixed in a glass of water, showing the Tyndall effect

Suspension (chemistry)

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In chemistry, a suspension is a heterogeneous mixture of a fluid that contains solid particles sufficiently large for sedimentation.

This distinguishes a suspension from a colloid, in which the colloid particles are smaller and do not settle.