论文部分内容阅读
物质的量浓度计算是学生学习的一个难点,在教学中教师指导学生学会应用“一二三四”策略,即一个思想——守恒思想为核心,两个守恒量——质量守恒、物质的量守恒为关键,三套公式——定义公式、一条龙公式与稀释公式为桥梁,四法——物质的量为中心法、简设法、单位合理取舍法、建立情景法为技巧,则可以较好地解决此类问题。
The calculation of the amount of substance concentration is a difficult point for students to learn. In teaching, teachers guide students to learn how to apply “one two three four” strategy, that is, one thought - conservation thought as the core, two conservation quantities - conservation of mass, Quantity of conservation as the key, the three sets of formulas - the definition of formula, one-stop formula and dilution formula for the bridge, the four law - the amount of material as the center method, the simple method, the unit reasonable choice of law, the establishment of the scene method as a skill, you can Solve such problems better.