Which of the following statements is true about recrystallization?
1) Using too much solvent results in a low percent recovery but does not impact the purity of the recovered material.
2) Using too little solvent results in a decrease in purity and a slight increase in percent yield.
3) Slower cooling tends to give larger and more pure crystals.
4) Faster cooling results in smaller crystals of lower purity.
5) Plunging hot liquid directly into ice water forces rapid cooling and traps impurities within the crystal lattice.