Add powdered insoluble ____ to acid in a beaker, one spatula at a time, ____ to mix. Continue adding powder until it is in ____ (some unreacted powder is left over). ____ the mixture in the beaker to remove the excess powder. Collect the ____. Pour the filtrate into an ____ basin. Place on a water ____, and heat until about half the water from the ____ has been removed by ____. Stop heating when small ____ start to appear around the edge of the evaporating ____. Pour the remaining solution into a watch glass, and leave in a warm, dry place for ____ to occur. If necessary, ____ the crystals by ____ gently with filter paper.

Crystallisation method

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