在初中化学里,要求学生们理解和识记的内容繁多,加上化学的运动形式复杂比较,规律性也不如其他学科强,学生初学时,往往觉得枯燥乏味,记忆起来十分困难。笔者尝试运用了下列化学知识口诀帮助学生巧记有关知识,的确起到事半功倍的佳果。现整理如下:一、1至20号元素顺序口诀氢氦锂铍硼,碳氮氧氟氖。钠镁铝硅磷,硫氯氩钾钙。 In junior high school chemistry, students are required to understand and remember a great deal of content, coupled with the complexity of chemical forms of movement, regularity is not as strong as other disciplines, students often feel boring when tutoring, it is very difficult to remember. I try to use the following chemical knowledge formulas to help students remember that knowledgeable, indeed play a multiplier effect. Now collated as follows: First, element order formulas from 1 to 20 Hydrogen Hellithium Beryllium boron, carbon oxynitride Neon. Sodium magnesium aluminum silicon phosphorus, calcium sulfur sulfur potassium.