一、把握整体思路,构建知识体系面对种类繁多、性质复杂的元素化合物知识,“先整体、后局部、再整体”的学习方法尤为重要。“先整体”是指通过元素周期表、元素周期律,从整体上对元素化合物知识进行学习,认识、了解普遍规律和共性。“后局部”是指具体地学习某一族的知识时,先学习其代表,再全面掌握该族元素化合物知识。“再整体”则指将分散的知识点从多种角度进行归纳总结,建立起知识前后纵横联系,形成知识系统,构建完整的知识体系。具体学习某一种元素时,其基本思路是“位置→结构→性质→制备与用途,顺着这个思路学习,可将元素化合物知识条理清晰地掌握。其中起决定作用的则是结构部分,主要包括原子结构、分子结构和晶 I. Grasp the overall idea and build a knowledge system Facing the knowledge of a large variety of complex chemical compounds of elements, the learning method of “preemptive, post-part and re-holistic” is particularly important. “Whole first” refers to learning, understanding and understanding general laws and commonalities of elemental compounds as a whole through the periodic table of elements and the periodic law of elements. “After the local” refers to the specific learning of a particular group of knowledge, the first study of its representatives, and then a comprehensive grasp of the knowledge of compounds of the group of elements. “Re-holism” refers to the dispersed knowledge points from a variety of angles to summarize, establish knowledge before and after the vertical and horizontal links, the formation of knowledge systems, build a complete knowledge system. Specific learning of a particular element, the basic idea is "location → structure → property → preparation and use, follow this train of thought, elements of the compound knowledge can be clearly organized grasp of which is decisive role is the structural part of the main Including atomic structure, molecular structure and crystal