化学上研究物质的性质通常都需要通过实验对物质进行探究,因此研究的对象一般都需要是纯净物,而生活中的各种物质中有很多物质是混合物,所以化学实验中就必然需要研究由混合物变成纯净物的方法,即需要对混合物进行分离,常见的混合物分离的方法中,物理方法有哪些呢?这些方法如何来应用呢? Chemical research on the nature of the material usually need to explore the material through experiments, so the object of study are generally required to be pure, and life of many substances in a mixture of substances, so the chemical experiment is bound to need to study by The mixture becomes pure method, that is, the need for separation of the mixture, the common method of mixture separation, what are the physical methods? How to use these methods?