Question

Properties of Suspension and colloid?​

Answer 1

$\underline{\boxed{\pink{\bf{Suspension :-}}}}$

A suspension is a heterogeneous mixture in which the solute particles do not  dissolve but remain suspended throughout the bulk of the medium.

Properties of a Suspension :

• Suspension is a heterogeneous mixture.  
• The particles of a suspension can be seen by the naked eye.  
• The particles of a suspension scatter a beam of light passing through it and make  its path visible.  
• The solute particles settle down when a suspension is left undisturbed, that is, a  suspension is unstable. They can be separated from the mixture by the process of  filtration. When the particles settle down, the suspension breaks and it does not  scatter light any more.

$\underline{\boxed{\green{\bf{Colloid :-}}}}$

Solutions in which the size of particles lies in between those of true solutions and  suspensions are called colloidal solutions.

Properties of a colloid :

• A colloid is a heterogeneous mixture.  
• The size of particles of a colloid is too small to be individually seen by naked  eyes.  
• Colloids are big enough to scatter a beam of light passing through it and make its  path visible.
• They do not settle down when left undisturbed, that is, a colloid is quite stable.
• They cannot be separated from the mixture by the process of filtration. But, a  special technique of separation known as centrifugation, can be used to separate  the colloidal particles.