I want to learn how to isolate chemicals from substances. For example lets say I have a pile of powder which consists of about 5 different chemicals. The chemical I want to isolate is highly soluble in water. Lets say one of the other chemicals isn't soluble in water but highly soluble in alcohol. How would I go about getting rid of the alcohol soluble chemical? Could I just mix the powder alcohol, shake it up in a sep funnel and drain? Would I be better off adding water to the powder and siphoning off the solution but leaving behind the insoluble powder? Would that get rid of any chemicals that werent soluble in water? What happens if there are other unwanted chemicals that are soluble in water? Would I just have to find solvents that some of the chems are soluble in and others aren't?