金叶同志认为:现行初中物理教材第2册中第80页上“液体蒸发时要吸收热量”这一观点是要加上条件的,因此当然是错误的,需要在教学过程中加以补正。对于这种观点,自己不敢苟同。我认为,现行的全国统编教材上的观点是正确的,蒸发是一个吸热过程,并且在任何温度下,只要这种发生在液体表面的汽化过程发生。 怎样理解“液体蒸发时要吸收热量”呢? 从微观上看,蒸发就是液体分子从液面跑出的过 Comrade Jin Ye believes that the concept of “absorbing heat when the liquid evaporates” on page 80 of Book 2 of the current junior middle school physics textbook is to be conditional, so it is certainly wrong and needs to be corrected during the teaching process. For this view, I dare not agree. I believe that the current view of the national textbook is correct. Evaporation is an endothermic process, and at any temperature, as long as this happens in the vaporization process of the liquid surface. How do you understand the “heat to absorb heat when the liquid evaporates?” From the microscopic point of view, evaporation is the liquid molecules that have escaped from the liquid surface.