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氧气一章的内容既是同学们学习的重点,也是中考必考内容之一,特别是近年考查氧气实验设计内容更是中考命题的新平台,题型新、活,主要借以考查同学们的实验思维能力和创新能力,现举几例评析如下: 一、仪器组合型此类试题要求同学们解题时能知道常用仪器的名称、用途以及实验室制取氧气的发生装置、收集装置、收集方法和操作步骤。
The content of the chapter on oxygen is not only the focus of the students’ study, but also one of the contents of the examination. In particular, the examination of oxygen experimental design content in recent years is a new platform for the examination proposition. The new questions are new and lively, mainly to examine the experimental thinking of the students. Capability and innovation capabilities are reviewed in the following examples: 1. Instrument Combinations This type of test requires students to know the names and uses of commonly used instruments, as well as the oxygen generating devices, collection devices, and collection methods of the laboratory. Steps.