离子方程式是化学中极为重要而又应用十分广泛的一种化学用语,因此,在中学阶段的教学中就应该使学生对离子方程式的书写达到正确熟练的程度。在教材中,没有专门介绍离子方程式的配平方法,只是在把分子方程式改写为离子方程式时,直接自然地引出了离子方程式的配平问题。在这种情况下,如果不教给学生配平离子方程式的道理和方法,就会使学生只会通过改写机械地照搬有关系数,而不能 Ionic equation is a chemical term that is extremely important and widely used. Therefore, in the middle school teaching, students should be able to achieve the correct level of proficiency in writing ion equations. In the textbook, there is no method of trimming the ion equation specifically, but when the molecular equation is rewritten into the ion equation, the trimming of the ion equation is directly and naturally induced. In this case, if students are not taught the principles and methods of balancing ion equations, students will only mechanically copy the relevant coefficients and not