做习题,是对概念的巩固和加深,同时,又是检查对概念的理解和应用能力,也是对学生智力的培养手段。化学学科更是一门注重基本概念的学科。概念清楚,可以提高理解、分析能力。 To do exercises is to consolidate and deepen the concept. At the same time, it is to examine the understanding and application of concepts. It is also a means of cultivating students’ intelligence. Chemistry is a discipline that focuses on basic concepts. Clear concepts can improve understanding and analysis capabilities.