一、复习要求1 常识性介绍　原子团 ;核外电子排布的初步知识 ;物质的形成 .2 了解　元素的涵义 ;原子、分子、离子的概念 ;原子的构成 ;元素与原子、分子与原子以及原子与离子的区别与联系 ;相对原子质量 ;相对分子质量 .二、知识结构　　三、主要内容提示1 物质的组成从宏 First, review requirements 1 Common sense introduction to atomic groups; preliminary knowledge of nuclear electronic arrangements; formation of materials. 2 understanding of the meaning of elements; the concept of atoms, molecules, ions; the composition of atoms; elements and atoms, molecules and atoms and atoms Differences and connections with ions; Relative atomic masses; Relative molecular masses. Second, knowledge structure III. Main content tips 1 Composition of substances from macros