化学计算是从量的方面来反映物质的变化及其规律的。通过化学计算，既能获得化学计算的基本技能，又能加深对化学基本概念、化学基本定律和化学基本理论的理解，更好地掌握元素及其化合物的性质，进一步提高运用化学知识分析、解决一些化学实际问题的能力；同时，化学计算在化? Chemical calculations reflect changes and laws of matter from the aspect of quantity. Through chemical calculations, both the basic skills of chemical calculations can be obtained, and the understanding of basic concepts of chemistry, basic laws of chemistry and the basic theory of chemistry can be deepened. The nature of elements and their compounds can be better understood, and the use of chemical knowledge analysis and resolution can be further improved. Some of the capabilities of chemical problems; at the same time, chemical calculations