Question

A colloid is a _________ mixture and its components can be separated by the technique known as ________.

• A. heterogeneous
• B. centrifugation

Answer 1

Answer:

Colloid:

• A colloid is a mixture in which particles of an insoluble substance are suspended throughout another substance.
• A colloid is an example of a heterogeneous mixture.
• In this solution, the size of solute particles is between those in true solutions and those in suspensions.
• The size of particle ranges from $1$ nanometer ${10}^{-9}\mathrm{m}$ to $1$ micrometer${10}^{-6}\mathrm{m}$.
• For example, smoke and dust in the air, here solid dust particles are suspended in a gaseous air medium.

Separation of the components of colloids:

• Separation of the components of colloids can be done by the Centrifugation method.
• In this method, we apply centrifugal force to separate the mixtures or particles from a solution.
• During this process, the denser particles to the bottom and the lighter particles stay at the top and become separate.

Conclusion:

Therefore, A colloid is a heterogeneous mixture, and its components can be separated by the technique known as centrifugation.