D Question 9 Which would be a major reason why recrystallization did not occur? O too little solvent was added O compound contained too many impurities O incorrect filtration was used O too much solvent was added Question 10 If crystals do not form after cooling which would work to start the recrystallization process? O scratching inside of the container with a glass stirring rod all of these would work O boiling off excess solvent O adding a seed crystal