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In your childhood, you might have played in/with mud. But, have you ever gave a thought, what happens when we add the mud to freshwater?
Will it dissolve or not?
![shutterstock_726131269.jpg](https://resources.cdn.yaclass.in/6a2f428c-1bd8-4b90-b230-b43a2782ee24/shutterstock726131269w300.jpg)
Mud
We know that the soils or mud are solid-state, whereas water is in a liquid state. And when you mix these two substances, mud or soil do not dissolve in the water. Therefore, this kind of solution is known as suspension.
Suspension:
- The heterogeneous mixture in which the solute particles do not dissolve in the solvent and settle down entirely in the medium.
- We can filter the undissolved particles by the filtration method. And, thesse particles are visible to the naked eye.
Example:
1. Clay mixture with water
![shutterstock_1837694413.jpg](https://resources.cdn.yaclass.in/b062183c-3d3e-4f89-bd7a-1889dcdf7ef7/shutterstock1837694413w300.jpg)
2. Flour in water
![shutterstock_1750487036.jpg](https://resources.cdn.yaclass.in/1b2f757a-5c43-483d-abf9-a231f8b73ae2/shutterstock1750487036w300.jpg)
3. Mixture of chalk and water
![shutterstock_1429448312.jpg](https://resources.cdn.yaclass.in/00dbe7fa-e70a-4dce-bf1e-9b2d0e91687d/shutterstock1429448312w300.jpg)
Properties of a suspension:
![shutterstock_1907769022.jpg](https://resources.cdn.yaclass.in/ace4cd76-89a6-43e3-b8a5-d5b11df50f75/shutterstock1907769022w300.jpg)
Suspension
1. Suspension is a heterogeneous mixture.
2. The solute particle settle down when it is left undisturbed because suspensions are unstable.
3. You can see these suspension particle settles through your naked eye.
![shutterstock_1678408690.jpg](https://resources.cdn.yaclass.in/e3ebd779-748b-4853-afb6-bcfc20080b75/shutterstock1678408690w300.jpg)
Tyndall effect
4. Suspension particles scatter a beam of light passing through it and make its path visible.
Note:
- When the suspensions settle down, the beam of light is not scattered.
- The suspensions can be separated by the filtration process.