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初中化学碳这一章具有承上启下的重要作用。而CO_(?)的制法和性质又是本章的重点,它与日常生活、自然现象有密切联系。为增强初中学生学习化学的积极性,培养他们观察、思维、实验的能力。我们结合教材内容,开展了一次有关CO_2制法、性质的课外讨论活动,取得较好的效果,现介绍如下。 1.制取气体CO_2实验首先提出问题:除课本上制取的CO_2的装置外,能否用启普发生器来制取? 引导学生回忆用启普发生器制取的气体
The junior chemical carbon chapter has an important role to play. The method and nature of CO_(?) are the focus of this chapter. It is closely related to daily life and natural phenomena. To enhance the enthusiasm of junior middle school students in learning chemistry, develop their ability to observe, think, and experiment. Based on the content of the teaching materials, we carried out an extracurricular discussion on the nature of the CO_2 system and its nature and achieved good results. We now introduce the following. 1. Preparation of gas CO 2 experiment First of all, ask questions: In addition to the CO 2 device made from textbooks, can we use the Kepler generator to prepare? Guide the students to recall the gas produced by the Kepler generator