晶体是化学竞赛的考查热点。在竞赛辅导中,晶体部分应给学生讲些什么,对这些知识的深度把握到何等成度为好,是一个非常现实的问题。下面是我们对这部分知识的讲解内容,望能对您有所借鉴。一、几个概念1.晶体与非晶体固体物质分为晶体和无定形物质。很多无定形物质都是由许许多多个极微小的晶体积聚而成的。无定形体即非晶体。晶体与非晶体的比较见附表。2.单晶和混晶单晶是由晶体中的一个结构单元向空间生长而成的晶体。由于单晶中的所有质点都是有序排列的, Crystals are the hottest point in chemistry contests. In the competition counseling, the crystal part should give students what to say, to grasp the degree of depth of these knowledge as well, is a very realistic problem. Here is our explanation of this part of the knowledge, hope you can learn from it. First, a few concepts 1. Crystalline and non-crystalline solid material is divided into crystalline and amorphous material. Many amorphous materials are made up of many tiny crystals. Amorphous body that is non-crystalline. Comparison of crystal and non-crystal see schedule. 2. Single crystal and mixed crystal Single crystal is the crystal structure of a unit to the growth of space from the crystal. Since all the particles in a single crystal are ordered,