随着新课程标准的实施,化学计算题的考查已不再单独停留在纯计算和解题技巧上,一些与实验紧密相联的数据分析型计算题成为了热点。这些题通常是给一个实验的情景,给一组实验数据,考生通过观察分析数据,进行做答。例1.有一种石灰石样品,其中含有的杂质是二氧化硅(二氧化硅是一种 With the implementation of the new curriculum standards, the examination of chemical calculation questions is no longer solely on pure calculation and problem-solving techniques. Some data analysis-type calculation problems that are closely related to the experiment have become hot spots. These questions are usually given to an experimental scenario, giving a set of experimental data. Candidates respond by observing the analytical data. Example 1. There is a limestone sample containing silica (silicon dioxide is a kind of impurity