Sedimentation and Decantation:
- The process in which the heavier component of the mixture settles down when water is added to it is known as sedimentation.
- Decantation is the process of separating clean water from the dust which has settled down.
- This method can also be used to separate two liquids which are not soluble in each other eg. oil and water.
- This method is used to separate insoluble impurities from water or any other liquid.
- The liquid is passed through a filter paper.
- Solid particles are not able to pass through it and remain on the filter paper.
- It is the process of conversion of water into its vapor .
- Salt is separated from the sea water by using this method.
- Usually one one method is not sufficient to separate the components of a mixture and a series of methods are required.
- For example if we need to remove impurities from water by the process of evaporation and we also require the liquid, a process called condensation is also carried out.
- Condensation is the process of conversion of water vapor to water by cooling.