化学平衡是高中化学重要的知识点之一,概念抽象复杂,难于理解,涉及的内容较广,学生接受起来有一定的难度,也是高中化学的一大难点。化学平衡标志的判断是其中基础的知识点,很关键,对后面平衡移动的理解起着至关重要的作用。如何确定可逆反应体系在哪些情况下再达到平衡状态?怎样从多方面去认识化学平衡的建立?哪些量可以作为平衡建立判断的标志? Chemical equilibrium is one of the most important knowledge points of chemistry in senior high school. The concept of abstract is complicated and difficult to understand. It involves a wide range of topics. Students accept a certain degree of difficulty and is also a major difficulty in high school chemistry. The judgment of chemical equilibrium sign is one of the basic knowledge points, which is the key point and plays an important role in the understanding of balance movement. How to determine the reversible reaction system under which conditions to reach equilibrium? How to recognize the establishment of chemical balance in many ways? What amount can be used as a balance to establish the judgment of the mark?