进行题组训练,是培养同学们创造性思维能力的一条有效途径.改编习题的方法很多,如抓住题目中的“相同”数据进行改编,通过一题多变的方法对一道化学计算题进行变式练习,会找出很多重要的规律和启示,是巩固和掌握所学知识的重要手段,也是培养灵活性思维的有效措施之一.下面列举课本中的一道习题,通过一题多变的方法来总结出其内在的规律.原题镁、锌、铁三种金属各30 g,分别与足量盐酸反应,各生成氢气的质量是多 Conducting a problem group training is an effective way to cultivate students’ creative thinking ability. There are many methods for adapting the exercises, such as seizing the “Identical” data in the subject, adapting it to a chemistry problem Conducting variant exercises will find out a lot of important laws and inspirations. It is an important means to consolidate and master the knowledge learned, and it is also one of the effective measures for cultivating flexible thinking. The following list of exercises in the textbooks will change through a variety of topics. The method to sum up its internal rules. The original title of magnesium, zinc, iron three kinds of metal 30g, respectively, and sufficient amount of hydrochloric acid reaction, the quality of hydrogen generated by each