高一学生学习了物质的量及其单位摩尔后,涉及化学计算的问题大量增加,计算层次不断提高,出现了一类用关系式能更直观、更快捷解答的问题.这就要求学生学会推导关系式并进行计算,以提高解题能力,培养思维的敏捷性. 关系式是化学计算中用来表示已知量与未 After the students of the first grade learned the quantity of substances and their unit moles, the number of problems involving chemical calculations increased substantially, and the level of calculations continued to increase. There was a question that could be solved more intuitively and quickly with a relational formula. This requires students to learn to deduce The relationship is calculated and calculated to improve problem-solving abilities and to foster the agility of thinking. Relational expressions are used in chemical calculations to represent known quantities and