Question

explain suspension no spam ⚠️​

Answer 1

$\sf{Answer}$

A suspension is a heterogeneous mixture in which the small particles of a solid are spread throughout a liquid without dissolving in it.

Some common examples of suspensions are:- Chalk-water mixture, Muddy water, Milk of Magnesia, Sand particles suspended in water, flour in water, etc.

Properties of a Suspension:-

• A suspension is a heterogeneous mixture.
• The size of solute particles in a suspension is quite large. It is larger than 100 nm in diameter.
• The particles of a suspension do not pass through a filter paper. So, a suspension can be separated by filtration.
• The suspensions are unstable. The particles of a suspension settle down after sometime.
• A suspension scatters a beam of light passing through it (because it's particles are quite large).

Extra Informations:-

• The substance which is dissolved in a liquid to make a solution is called 'solute'.
• The liquid in which the solute is dissolved in known as 'solvent'.

About solutions:-

A solution is a homogeneous mixture of two(or more substances).

Properties of a solution is as follows:-

• A solution is a homogeneous mixture.
• The size of solute particles in a solution is extremely small. It is less than 1 nm in diameter. $\sf{1\:nanometre = 10^{-9}}$
• The particles of a solution cannot be seen even with a microscope.
• The particles of a solution pass through the filter paper. So, a solution cannot be separated by filtration.
• The solutions are very stable. The particles of solute present in a solution do not separate out on keeping.
• A true solution does not scatter light (This is because its particles a very, very small).

About Colloids:-

A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions.

Properties of colloids are as follows:-

• A colloid appears to be homogeneous but actually it is heterogeneous.
• The size of particles in a colloid is bigger than those in a true solution but smaller than those in a suspension. It is between 1 nm and 100 nm in diameter.
• The particles of most of the colloids cannot be seen even with a microscope.
• The particles of a colloid can pass through a filter paper. So, a colloid cannot be separated by filtration.
• The colloids are quite stabel. The particles do not separate out on keeping.
• A colloid scatters beam of light passing through it. (because its particles are fairly large).