“二氧化碳的性质及制取”是历年中考化学的热点。主要从三个方面进行考查:一是有关二氧化碳的物理性质、化学性质和用途;二是二氧化碳的实验室制取;三是氧气与二氧化碳的性质、有关气体的制取等知识的综合考查。考点一二氧化碳的性质和用途该考点要求考生全面熟练地掌握二氧化碳的物理性质、化学性质和用途,二氧化碳与氧气的性质和用途的相同点和不同点同样需要牢记。该知识点命题时可以单独成题,也可以与其他元素和化合物的知识组合成 “The nature and preparation of carbon dioxide ” is the hot spot in the examination chemistry over the years. Mainly from three aspects to examine: First, the physical properties of carbon dioxide, chemical properties and uses; Second, the laboratory of carbon dioxide; Third, the nature of oxygen and carbon dioxide, gas-related knowledge of the comprehensive examination. Test sites a carbon dioxide nature and use of the test sites require candidates to fully grasp the physical properties of carbon dioxide, chemical properties and uses of carbon dioxide and oxygen properties and uses the same and different points also need to keep in mind. The knowledge point proposition can be a single problem, but also with other elements and compounds of knowledge combined