论文部分内容阅读
现行高中课本第一册第一章及第三册第三单元,分别从物质的内能及键能两个不同的角度解释了化学反应中,为什么有的放出热量,有的吸收热量。由于这两个概念的原理较为复杂,中学阶段不宜深究,故课本中只是做了简要的分析。因此,许多学生对此困惑不解,甚至将两个概念混为一谈。物质的内能和键能是两个截然不同的概念。物质的内能,即热力学能,是物质内部各种能量的总和,它是体系本身的性质。我们不能测
The existing high school textbooks Volume I and Chapter III of the third unit of the third unit, respectively, from the material energy and the key can be two different angles to explain the chemical reaction, why some emit heat, and some absorb heat. Due to the complexity of the concepts of these two concepts, it is not advisable to study the high school stage. Therefore, the textbook simply analyzes it briefly. As a result, many students are puzzled and even confuse the two concepts. Material energy and bond energy are two very different concepts. The internal energy of matter, that is, the thermodynamics energy, is the sum of all kinds of energy within the material and is the nature of the system itself. We can not measure