Separating Mixtures

There are four main ways on separating mixtures.
__________________________________________
One way is you can filter the mixture so that some particles cannot pass through.

Another way is that you can use floating.  For example, low density sawdust floats away from high density sand that goes to the bottom.
__________________________________________
Evaporation can be used to separate mixtures.  For example, you can have salt water.  Then you evaporate the water so you have salt left.

____________________
The fourth way is to use magnetism.  Iron is attracted to a magnet and the nonmagnetic substance remains.