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Difference between Colloid and Suspension

Difference between Colloid and Suspension

Do you know the difference between a colloid and a suspension? If not, no worries! This blog post will explain all the essential details about these two types of mixtures, and how they are distinguished from one another. We’ll define what each type of substance is, break down their components and discuss how to recognize them in various environments. Whether you’re a student learning about mixtures for the first time or an experienced scientist who needs a refresher on this topic, this post should provide valuable insights into these fascinating materials.

What is a Colloid?

  • Colloids are unique mixes of two seemingly separate matter and liquid. Colloid suspensions involve a mix of solid particles being dispersed in an uninterrupted liquid medium.
  • These particles can be present in concentrations between 0.1 and 1 milliliter, depending on the process of creation. Colloids have a wide range of uses, including medical science to the production of paint and cosmetics – thanks to their ability to produce substance properties different from their individual components.
  • Colloid suspensions also have utility in many industries because they are non-reactive, thermally insulating and transparent objects, which makes them ideal for specialized applications. With its diverse applications, it is clear that colloid suspension remains a powerful tool in modern chemistry and development research.

What is Suspension?

Suspension is a mixture of solid particles suspended in a liquid medium. Suspensions are formed when insoluble particles are suspended evenly throughout the liquid medium, creating a suspension that can often remain suspended indefinitely. Suspensions can occur naturally, such as in mud or clay, or can be created through vigorous mixing of the solid and liquid components.

Suspensions have many uses in everyday life, including everything from paints and coatings to food products and cleaning agents. Suspensions are also useful in laboratories for numerous experiments, allowing solid particles to be measured and analyzed without clumping or settling generally make them suitable for use in industrial applications as well.

Difference between Colloid and Suspension

  • Colloids and suspensions are both suspensions of particles in a liquid medium; however, they have more differences than similarities. Colloids contain particles that are so small and light that they remain suspended in the liquid indefinitely, while suspensions contain larger and heavier particles that settle out of the fluid over time.
  • Colloids form a stable environment for the dispersed substance, with very little interaction between them; whereas, in suspensions, interactions between the dispersed particles are much more common.
  • Colloid solutions also appear cloudy or opaque due to light scattering from the tiny particles contained within them, whereas suspension solutions look much clearer due to their larger particle size. Colloid vs Suspension is an important distinction to make when considering solutions for a variety of purposes.


In short, a colloid consists of large particles that are suspended in a liquid while a suspension contains small particles that are dispersed in a liquid. The size of the particle is one of the key factors that determine whether something will be classified as a colloid or suspension. Generally speaking, if the particles are larger than 1 micrometer then it is considered to be a colloid. If the particles are smaller than 1 micrometer, then it is likely to be classified as a suspension. There are other factors that can influence this classification such as how well the particles are mixed together and how stable they are over time.

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