建国以来中学化学课程中基础理论知识经历了以下四个阶段:以“原—周—分”为主线的基础理论知识阶段( 1 949～1 965年) ;基础理论知识被极大削弱阶段( 1 966～1 976年) ;以“物质结构”为主线的基础理论知识阶段( 1 977～1 990年代前期) ;以“物质结构和化学反应与能量”为主 The fundamental theoretical knowledge in the middle school chemistry curriculum since the founding of the People’s Republic of China has gone through the following four stages: the basic theoretical knowledge of the “primary-week-central” line (1194-1965); the basic theoretical knowledge has been greatly weakened (1 From 966 to 1 976), the basic theoretical knowledge of the “material structure” (the period from the 1977th to the 1990th) and the “material structure and chemical reaction and energy”