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根据试题提供的信息来推断未知物的组成、结构和性质是化学竞赛的一种常见题型,试题提供的新信息和要推断的物质大都是教材中没有学过的。因此,此类题目能够很好地考查参赛选手搜集、提炼以及整合新信息的能力。由于题目提供的信息量大且又较陌生,信息间的联系又较少,故解答这类题目时往往因信息量大而难以把握,又因信息彼此孤立而难以归
According to the information provided in the questions, the composition, structure, and properties of the unknowns are a common type of chemistry contest. The new information provided by the questions and the materials to be inferred are mostly not learned in the textbooks. Therefore, such topics can well examine the competitor’s ability to collect, refine, and integrate new information. Because the amount of information provided by the questions is large and relatively unfamiliar, there are fewer links between the information. Therefore, when answering such questions, they are often difficult to grasp because of the large amount of information, and because information is isolated from each other, it is difficult to