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初三课本第三章“碳”是新教材中的重要内容。这部分内容从表面上看前后联系不十分紧密,而且逻辑性也不强。怎样才能系统地总结和复习这部分内容,很值得我们琢磨。在这一章里,主要讲授碳及其化合物的性质。在体现它们化学性质的这些化学反应中,大部分反应都与二氧化碳的生成有关。故只要抓住生成二氧化碳这条线索,我们对本章讲授的碳、一氧化碳、二氧化碳、碳酸盐等物质的化学性质等内容就会迎刃而解了。下面我们总结了八个类型的生成二氧化碳的方程式:
The third chapter of the third grade textbook, Carbon, is an important part of the new textbook. This part of the content from the surface is not very close before and after contact, and logic is not strong. How can we systematically summarize and review this part? It is worthwhile for us to ponder. In this chapter, we mainly teach the properties of carbon and its compounds. In these chemical reactions that embody their chemical properties, most reactions are related to the production of carbon dioxide. Therefore, as long as we grasp the clues of generating carbon dioxide, we will understand the chemical properties of carbon, carbon monoxide, carbon dioxide, and carbonates taught in this chapter. Below we summarize the eight types of equations for generating carbon dioxide: