一、溶液的性质由两种或两种以上纯物质混合而成的混合物,可能是均匀的(或称均相的),也可能是不均匀的(或称非均相的)。倘若混合物内任何微小部分中的组成部分都相同,而且它们的密度、温度和压力等也都没有整异,那就是均相的,均相的混合物也称溶液或溶体。溶液可以是气态、液态或固态的。构成均相混合物的上列条件中只要有一条不能满足,那么混合物就将是非均相的或称多相的。对于非均相的混合物,可以藉简单的机械方法,如过滤、沉淀等方 First, the nature of the solution Mixtures of two or more pure substances may be homogeneous (or homogeneous), may also be uneven (or heterogeneous). If the mixture in any tiny part of the same components, and their density, temperature and pressure are also not uniform, it is homogeneous, homogeneous mixture, also known as solution or solution. The solution can be gaseous, liquid or solid. As long as one of the above conditions constituting the homogeneous mixture is not met, the mixture will be heterogeneous or heterogeneous. For heterogeneous mixtures, can be by simple mechanical methods, such as filtration, precipitation and other parties