Which of the following steps is NOT part of the process of purifying a compound?
3)hoose a solvent
2) Add hot solvent just until all of the compound you are trying to purify dissolves
3) If colored impurities are present, add decolorizing charcoal
4) Filter the resulting solution while it is still hot
5) Cool the solution
6) Separate the solid compound from the solvent
7) Dry the isolated crystals