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讨论型计算题融元素化合物知识、数理分析、逻辑推理于化学计算之中。属于思维容量大、技巧性强、方法灵活、有利于培养学生能力、开发学生智力、形成学生化学计算的技能技巧的综合性优秀题型,也历来属于化学计算教学的重点和难点之一。教学中有意识地、分散地、有计划、有步骤地结合各章教学进行讨论型计算题解法的训练,揭示讨论型计算题解题思路和思维过程,形成讨论型计算题解题的基本方法、规律和技巧,对提高中学化学教学质量,无疑是大有裨益的。 1.题型和解法示例 一、混合物过量讨论型计算题 例1.18.4g NaOH和NaHCO_3混合固体,
The discussion-type computational problem melts elemental compound knowledge, mathematical analysis, and logical reasoning in chemical calculations. It is a comprehensive and outstanding question type that is large in thinking capacity, strong in technique, flexible in methods, conducive to developing students’ abilities, developing students’ intelligence, and forming students’ chemistry skills. It has always been one of the key and difficult points in teaching chemistry. In teaching, consciously, decentralizedly, systematically, and systematically, each chapter’s teaching is combined with the training of discussion-type computational problem solving methods to reveal the thinking and thinking process of solving computational problems of discussion-type calculations and form the basic method for solving problems of discussion-type computational problems. Laws and techniques are undoubtedly of great benefit to improving the quality of chemistry teaching in middle schools. 1. Examples of problem solving methods 1. Mixture Excessive Discussion Calculation Examples Example 1.18.4g NaOH and NaHCO 3 mixed solids