化学计算是高中化学中的一个重要内容,是高考的重点,也是学生学习过程中的难点,运用化学知识进行相关计算,是学生应该具备的基本素质。如何使化学计算既快速,又准确,关键在方法和技巧,守恒法是化学计算中常用的方法。化学反应的实质是原子之间的重新组合,依据质量守恒定律,在化学反应中存在一系列的守恒现象,如,质量守恒、元素守恒、电荷守恒、电子得失守恒等,利用这些守恒关系解题的方法就 Chemistry calculation is an important part of high school chemistry, is the focus of college entrance examination, but also the difficulties in the process of student learning, the use of chemical knowledge related calculations, students should have the basic qualities. How to make chemical calculation both fast and accurate, the key lies in the methods and techniques, conservation method is commonly used in chemical calculation method. The essence of chemical reaction is the recombination between atoms. According to the law of mass conservation, there exists a series of conservation phenomena in chemical reactions, such as conservation of mass, conservation of electric charge, conservation of electrons, use of these conservation relations to solve problems The way