The steps for a typical recrystallization are listed below. Which of the following steps is incorrect? 1. The compound is mixed with a small amount of solvent and the solvent is heated to its boiling point. 2. Enough additional solvent is added with heating to fully dissolve the compound in the boiling solvent. 3. The mixture is cooled by immediately putting it in an ice-water bath. 4. No crystallization occurs on cooling, so the bottom of the container is scratched with a glass rod. 5. After crystallization is complete, the solid is filtered off and washed with a small amount of ice-cold solvent