论文部分内容阅读
化学计算在生产生活中有着广泛的应用,全国高考化学考试大纲对考生思维能力的考查有明确的说明:“将化学问题抽象成为数学问题,利用数学工具,通过计算和推理(结合化学知识),解决化学问题的能力。”从近几年的高考试题看,对考生应用数学知识解决化学问题能力的考查力度不断加大。因此,运用数学思想方法解决化学问题能力的专题学习和训练非常必要。本文通过以下几类常见数学思想方法示例说明。一、十字交叉法1.十字交叉法的应用原理
Chemical calculation in the production of life has a wide range of applications, the national college entrance examination of the chemical examination outline of the examination of the thinking ability of the examinee has a clear explanation: “The chemical problem of abstraction as a mathematical problem, the use of mathematical tools, through calculation and reasoning (combined with chemical knowledge) , To solve the problem of chemical problems. ”" From the college entrance examination papers in recent years, examine the ability of candidates to apply mathematical knowledge to solve chemical problems continue to increase. Therefore, the use of mathematical thinking method to solve the problem of the ability of thematic learning and training is necessary. This article through the following types of common mathematical ideas and examples. First, the cross method 1. The application of cross-law principle