Question

On mixing chalk powder and water, a mixture is obtained .Give any four reasons to support the fact that mixture so obtained is suspension

Answer 1

Mixtures are classified into True solution, colloid, and suspension depending upon the properties

True solution	Colloids	Suspension
The solute particles which are dissolved in the solvent has size less than 1 nm	Collidal particles have sizes in 1-1000 nm size	The suspended particles have greater than 1000 nm size, which we can easily see with the naked eye
Particles do not settle down, and do not show the Tyndall effect	Particles do not settle down when left undisturbed, and show the Tyndall effect	Particles settle down when left undisturbed
Example: sugar solution	Example: milk	Example: sand in water

By analyzing the properties of the solution, colloid, and suspension

• Chalk powder and water is a suspension
• The chalk powder doesn't dissolve in water
• When the mixture is left undisturbed, chalk particles will settle down
• It is a heterogeneous mixture where the chalk powder can easily be seen with the naked eye from the solution
• We can easily filter the chalk particles using filter paper

Thus, we can say that chalk powder and water is a suspension