Which of the following is a colloid

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Which of the following is a colloid

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In chemistry, a colloid is a mixture of tiny particles that are dispersed in another medium. In contrast, particles in a solution are smaller than this size, while particles in a suspension are larger. As in a solution, the particles in a colloid do not separate upon standing. The particles in a colloid are called the dispersed phase , which is spread throughout the dispersion medium. Colloids are classified as foams, aerosols, emulsions, gels, or sols, depending on the nature of the dispersed phase and dispersion medium.

Which of the following is a colloid

Colloids refer to dispersions of small particles usually with linear dimensions from around 1 nm to 10 micrometres. These particles may be either dissolved macromolecules or having macromolecular structures formed from smaller structural units, or they may constitute a separate phase as in aerosols, powders, pigments dispersions, emulsions or even finely pigmented plastics. These multiphase colloids mentioned above make an account of the properties of both phase and the interface between them and so their investigation is a natural adjunct to the study of the interface and reaching down to the size of colloid particles.

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Colloids, also known as colloidal solutions or colloidal systems, are mixtures in which microscopically dispersed insoluble particles of one substance are suspended in another substance. The size of the suspended particles in a colloid can range from 1 to nanometres 10 -9 metres.

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