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硅是中学化学教材中的重要非金属元素之一,硅及其化合物不仅涉及相关物质的性质和转化关系,而且还与物质结构知识密切相关,通过硅及其化合物对相关物质性质和物质结构知识等的考查是2005年各地高考试卷上的新热点.本文拟对2005年高考中与硅及其化合物有关的试题作一分类解析.一、硅原子及其在共价分子中的电子层结构题1(理科综合Ⅰ卷第27题)甲、乙、丙、丁为前三周期元素形成的微粒,它们的电子总数相等.已知甲、乙、丙为双原子分子或负二价双原子阴离子,丁为原子.(1)丙与钙离子组成的离子化合物跟水反应产生一种可燃性气体,反应的化学方程式是
Silicon is one of the important non-metallic elements in middle school chemistry textbooks. Silicon and its compounds not only involve the nature and transformation of related substances, but also are closely related to the knowledge of the structure of matter, through the knowledge of silicon and its compounds on the nature of related substances and material structure. The examination is a new hot spot in the examination papers of various regions in 2005. This article intends to make a classification analysis of the questions related to silicon and its compounds in the 2005 college entrance examination. 1. The silicon atom and its electronic layer structure in the covalent molecule 1 (Science Comprehensive Volume I, Question 27) A, B, C, and D are microparticles formed by the elements of the first three cycles, and their total number of electrons is equal. Known A, B, and C are diatomic molecules or negative bivalent diatomic anions. , Ding is an atom. (1) The ionic compound composed of C and Ca ions reacts with water to produce a flammable gas. The chemical equation of the reaction is