1. It would help if we knew what you were recrystallizing.
2. This question makes no sense at all. First they don't melt then they do.
1) what potential impurities were removed during recrystallzation?
2) two solids with different identities are frequently mixed together & do not melt, why do you suppose that the solids actually melted?
2 answers
1)what potential impurities were removed during solventless aldol recrystallzation?
2) why do you assume that is already melted even if they didn't.?
2) why do you assume that is already melted even if they didn't.?