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综观历年各地中考化学试题,都有“按图索骥”型实验题。这类题以实验仪器图或装置图来设置实验问题,涉及知识点多面广,综合性强,因而往往成为考生的失分点。本文拟对这类题的类型与解题策略举例浅析如下。1 判断型 这类题主要判断装置图的正误,实验程序是否合理、适用等。解题时,应遵循“从下到上,从左到右”的原
Looking at the chemistry examination questions in various examinations in various places over the years, there are experimental questions “in accordance with the diagram”. Such questions are set up with experimental apparatus diagrams or device diagrams to set up experimental problems, involving a wide range of knowledge points and comprehensiveness, and thus often become candidates’ points of failure. This article intends to give an example of the types of problems and problem solving strategies as follows. 1 Judgment type This type of question mainly judges the correctness of the device diagram, and whether the experimental procedure is reasonable and applicable. When solving problems, you should follow the principle of “from bottom to top, from left to right.”