More on Mixtures...

3 Thoughts:
1) Evaporation is a method to separate mixtures. People usually do not heat the mixture directly so as to prevent overheating. The mixture is usually heated over a water bath.
2) Filtration is another method in separating mixtures. Filter funnel, filter paper and a beaker are used. The substance which is found in the beaker is called filtrate while the substance which was collected at the filter paper is called residue.
3) Distillation is also another method to separate mixtures. This method is usually used to separate liquid-liquid mixture of different temperatures. The apparatus being used in this method are Bunsen burner, wire gauze, tripod stand, beaker and distillation set. The mixture is heated in a distillation flask until no water is left as the water in the mixture is found in the beaker.

2 Questions:
1) How do scientists find out the methods to separate mixtures?
2) What is the difference between distillation method and evaporation method?

1 Useful application:
1) By knowing the methods in separating mixtures, we can apply it in our daily life. If we want to get salt from seawater, we can use the evaporation method.