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化学计算是高中化学教学中不可或缺的部分,在高考试题中占有一定的分值.虽然近几年高考中计算考试有所淡化,但近观理科综合三年高考化学题,每年都对有关守恒法的计算进行考查.其实,高考对计算的考查,更重基础、更重方法.守恒法是解决化学计算问题常用的一种快速、简便而又准确的一种方法,在考试时既可节省时间又可提高准确率.所谓守恒,就是指化学反应的过程中,存在某些守恒关系:如质量守恒(原子或原
Chemistry calculation is an indispensable part of high school chemistry teaching, occupy a certain score in the entrance examination questions.Although the college entrance examination in recent years, the calculation of the test has been diluted, but the recent science comprehensive chemical examination of college entrance examination for three years, every year about In fact, the examination of the college entrance examination, more fundamental, heavier methods. Conservation Law is to solve chemical problems commonly used in a quick, easy and accurate method, the examination can either Save time and improve accuracy. The so-called conservation, refers to the chemical reaction process, there are some conservation relationship: such as conservation of mass (atomic or original