Except the common crystallization of copper(II) sulphate, sugar or table salt.
Are there any other compounds that can be crystallized under normal household condition?
(在一般家庭的情況下, 有冇其他化合物可以進行結晶?)
*該些化合物要能在一般商店(如藥房)買到, 如不能, 香港有沒有專賣一般化學品的商店?