1 分子运动论这是初三物理热学部分的头一章(教科书第二册第二章)共四节,依次是分子运动论、内能、热量和燃烧值。重点是内能和热量。后续各章依次是《物态变化》、《比热容》和《热机》。与原来的统编教材不同,统编教材是把分子运动论和内能的知识放在热学部分的后部,紧接着最后的热机,现在这套教材在结构上所做调整是出于以下考虑: 1 Molecular Movement Theory This is the first chapter of the physical thermal part of the third year (second volume of the second volume of textbooks). It consists of four sections, followed by molecular motion theory, internal energy, heat, and combustion values. The focus is on internal energy and heat. Subsequent chapters are “changes in the state of matter”, “specific heat capacity” and “heat engine.” Different from the original textbooks, the unified textbooks put the knowledge of molecular kinesiology and internal energy on the back of the thermal part, followed by the final heat engine. Nowadays, the adjustment of the teaching materials in this structure is due to the following considerations: :