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物质的分离与提纯是中学化学实验的重要组成部分,其内容广泛,如气体净化、产品提纯等都涉及物质的分离与提纯。物质的分离与提纯既渗透于高考化学综合实验题中,又经常出现在无机化工流程题中。考点1实验操作和主要仪器这类题目要求根据混合物的性质和特点,选择合适的分离方法,以及每一种分离方法需要的主要仪器。题型主要是选择题和综合实验题。这里涉及的分离方法主要是物理方法,如
The separation and purification of substances is an important part of the chemical experiment in middle schools. The content is extensive. For example, gas purification and product purification all involve the separation and purification of substances. The separation and purification of substances are not only infiltrated in the comprehensive chemical laboratory entrance exam questions, and often appear in the inorganic chemical process problems. Test Points 1 Topics such as laboratory procedures and major equipment require the selection of the appropriate separation method, depending on the nature and characteristics of the mixture, as well as the major equipment required for each separation method. Questions are mainly multiple choice questions and comprehensive experimental questions. The separation methods involved here are mainly physical methods, such as