论文部分内容阅读
近年来,化学与社会发展问题在中考中考查的主要内容有:环境问题、能源问题、生活健康问题、生产问题等。一、化学与环境问题考点主要有:空气和水的污染与防治、垃圾分类回收、“温室效应”、酸雨、空气质量日报、白色污染等。例1下图是某燃煤发电厂处理废气的装置示意图。下列说法正确的是()A.此过程中没有分解反应B.此过程中S元素的化合价未发生改变C.使用此废气处理装置不能减少酸雨的形成
In recent years, chemical and social development in the examination in the examination of the main contents are: environmental issues, energy problems, life health problems, production issues. First, the chemical and environmental issues test sites are: air and water pollution and prevention and control, waste recycling, “greenhouse effect ”, acid rain, air quality daily, white pollution. Example 1 The figure below is a schematic illustration of a plant for the treatment of waste gases from a coal-fired power plant. The following statement is correct () A. There is no decomposition reaction in this process B. The valence of S element has not changed in this process C. The use of this exhaust gas treatment device can not reduce the formation of acid rain