How to
separate these mixtures?
1. Solid cannot dissolve in LiquidsMethod:
Filtration
The insoluble solids
particles cannot pass through the pores of the filter paper, thus trapped. This is known as the residue.
2. Solids that can dissolve in Liquids
Method: crystallisation
The mixture is first heated to evaporate most of the liquid to form a hot saturated solution. It is then left to cool.
3. M
iscible LiquidsMethod:
Simple DistillationThey have different boiling points, the liquid with the lowest point vaporises and is collected first.
4. Immiscible Liquids
Method: Using a separating funnel
They have different densities.
5. Air and Petroleum
Method:
Fractional Distillation
They have different boiling points. Air is compressed into liquid state due to pressure.
6. Iron in a mixture(magnetic & non-magnetic materials)
Method: Magnetic attraction
Iron is a magnetic material,thus it can be attracted by the magnet.
7. Sand in a mixture
Method: Filtration
The insoluble solid particles cannot pass through the pores of the filter paper,thus trapped. This is known as the residue.
iscible Liquids
Method: Fractional Distillation