化学方程式的配平方法,种类繁多,各有特点,也各有弱点。我认为:有总结的必要,应该总结出规律,构成一套较完善的配平方法。它应具有简便、易学、省时的特点。化学方程式配平,应解决“如何入手和怎样入手”这两个问题。我归纳现在已知的配平方法,可用“三入手”加以概括,即:从原子入手,从分子入手,从化合价入手。其顺序是:先原子,后化合价,再分子。具体的说,配平时,首先从一种原子开始,对一般化学方程式,可以解 The method of balancing the chemical equations has a wide variety of characteristics, and each has its own weaknesses. I think: There is a need to sum up, we should sum up the rules, constitute a more complete method of trimming. It should be simple, easy to learn, and time-saving. The balance of chemical equations should solve two problems: how to start and how to start. I sum up the balance methods that are now known and can be summarized by “three starts,” that is, start with atoms, start with molecules, and start with valence. The order is: first atoms, later valences, and then molecules. Specifically, at the time of trimming, it begins with an atom and can be solved for general chemical equations.