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在讲解题方法时最重要的还是常规方法的介绍,只有在熟练掌握常规方法时,才能有效地应用简便方法快速解题。例如守恒法,任何化学反应过程中都存在着某些守恒关系如质量守恒、原子守恒、得失电子守恒等,所谓“守恒法”解题就是以某种守恒作为依据,寻找某种恒等关系解题的基本思路。其特点是可以避开某些繁琐的中间过程,避免书写复杂的化学反应方程式,提高解题速度。
The most important part in explaining the method is the introduction of the conventional method, and the simple method can be used to solve the problem quickly only when the conventional method is well-versed. For example, the conservation law, any chemical reaction process there are some conservation relations such as conservation of mass, atomic conservation, gain and loss of electron conservation, the so-called “conservation law ” is to solve the problem is based on a certain conservation, looking for some kind of identity The basic idea of solving the problem. Its characteristic is to avoid some cumbersome intermediate process, avoid writing complex chemical reaction equations, improve the speed of problem-solving.