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初中化学教学过程中主要有三种类型的化学基本计算,有关化学式的计算便是其中一种。由于这一部分涉及较多的抽象概念,给学生的正确计算带来一定的困难。如何教会学生进行正确的运算,帮助学生建立起化学计算的雏形,使学生重新树立起学习化学的信心,在这一点上更具有重要意义。本文仅就有关化学式的计算作一小结,以求共同探讨。
There are mainly three types of chemical basic calculations in junior high school chemistry teaching. The calculation of chemical formulas is one of them. Because this part involves more abstract concepts, it brings certain difficulties to students’ correct calculation. How to teach students to do the correct calculation, to help students to establish the prototype of stoichiometry, and to re-establish the confidence of students in learning chemistry, is more important at this point. This article only makes a brief summary of the calculation of chemical formula in order to discuss together.