Transcript for:
Techniques for Obtaining Solids from Solutions

however if we instead have a soluble solid in our liquid and it's actually dissolved then we have a solution and this time we won't be able to filter it out evaporation or crystallization for evaporation we place our solution in an evaporating dish or a crucible which we normally place on a tripod and then slowly heat it with a bunsen burner this will cause a solvent to start evaporating and the remaining solution to get more concentrated after a while crystals will start to fall because it's so concentrated and eventually all of the solvent will disappear leaving us with dry crystals of our solid [Music] crystallization the first step is still to place our solution into an evaporation dish and heat it but this time we need to heat it more gently so we might use a water bath instead of a bunsen burner then once some of the solvent has evaporated and you start to see crystals forming in the solution we stop heating it and leave it to cool as the solution cools more crystals will start to form because solids are less soluble at colder temperatures [Music] you