The separation of components in a mixture using the different of their physical properties such as density,particle size,shape,magnetic properties and electric properties is called mechanical separation .
Mother today we learnt about Machanical separation. Do you know, what is it?
Machanical Methord 1. Winnowing
Now I am going to Winnowing rice.
Do you know what is the physical property which we used to remove chaff from rice.
Yes I know. we use difference in densities of the component.
I know. The physical property that they used is difference in the size of component particles
It is the method of seiving
Do you see that people are removing gravel from sand.
3. Floating on Water
Do you know, what is the physical property used by farmers to remove dud seeds from seed paddy?
4. Magnetic separation
Mother I cant understand what is mean by Magnetic Separation.
Magnatic separation is used for separating certain minerals from mineral sands
Now tell me, What are the Mechanical methods that you learn grom me.
1.winnowing 2. Sieving 3. floating on water 4. Mechanical separation.
I think the difference between the densities of components and water.
The physical Property based on it is magnetic property of the components.