如同热量与比热一样,熔解热与热功当量也是热学的重要概念,又是教学的难点。在使用新编初中物理第二册时,要注意以下问题。一、组织对比讨论,认识熔解热要搞清熔解热的概念,关键在于弄清熔解过程,抓住以下两个问题则是认识熔解热的前提。1.做好萘的熔解实验。要引导学生抓住水温和萘 Like heat and specific heat, heat of fusion and heat work equivalent are also important concepts of heat, and it is also difficult to teach. When using the second edition of the junior middle school physics, pay attention to the following questions. First, organize the comparison and discussion, to understand the concept of melting heat to understand the concept of melting heat, the key lies in clarifying the melting process, to seize the following two issues is the prerequisite for understanding the heat of fusion. 1. Do the naphthalene melting experiment. To guide students to seize water temperature and naphthalene