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一、实验目的氧气和二氧化碳的性质实验是中学化学实验教学的重点之一。在课堂教学中,许多教师感觉实验所用仪器较多,过程繁杂,因此物理性质通常采用描述法进行介绍,不能带给学生直观的体会。为了解决这些问题,我们设计了如图1所示的装置。利用这套装置可以完成氧气和二氧化碳的一系列性质实验,该装置结构简单,现象明显,实验效率较高。二、实验仪器及试剂废弃塑料瓶(2个),蜡烛,火柴,小木条,铁架台,铁圈(2个),配
First, the purpose of the experiment The nature of oxygen and carbon dioxide experiment is one of the focus of chemistry experiment teaching. In the classroom teaching, many teachers feel that there are many instruments used in the experiment and the process is complicated. Therefore, the physical properties are usually introduced by the description method, which can not give the students an intuitive experience. In order to solve these problems, we designed the device shown in Figure 1. The device can be used to complete a series of oxygen and carbon dioxide nature experiments, the device structure is simple, the phenomenon is obvious, experimental high efficiency. Second, the experimental apparatus and reagents waste plastic bottles (2), candles, matches, small wooden, Tiegui Taiwan, hoops (2), with