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物质制备实验题是2012年高考化学实验题的一大亮点,分析2012年全国各地高考化学试卷,发现大多数物质制备实验题越来越新颖,也越来越灵活,是对考生实验能力的一个很好的考查。现对2012年各地高考有关“物质的制备实验”考查试题进行分析,望对大家在复习物质制备实验时有所帮助。一、常见气体物质或有机物的制备实验此类试题常涉及反应原理、试剂的选择、仪器的选择、装置的设计、条件的控制、实验的评价及计算等多个方面,综合性较强。解答物质制备实验要做到:明确实验目的,明确题
Material preparation experiment is a major bright spot in 2012 college entrance examination chemistry experiment analysis of the 2012 national college entrance examination chemistry papers and found that most of the material preparation experiment more and more innovative, more flexible, is a candidate experimental ability Very good test. Now around 2012 college entrance examination related to “material preparation experiment ” exam questions for analysis, hope everyone to review material preparation experiments helpful. First, the common gas or organic matter preparation experiments Such questions often involve the reaction principle, the choice of reagents, equipment selection, device design, conditions control, evaluation and calculation of experiments and other aspects, strong comprehensive. Answer material preparation experiments to be done: a clear purpose of the experiment, a clear question