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金属的化学性质和金属活动性顺序一直是学习的重点、中考的热点。多以选择、探究、流程的形式,从金属活动性的强弱判断、除杂、鉴别、工业制备、成分测定等多个角度进行考查。本文将围绕金属的化学性质及金属活动性顺序两个重要考查点,选择典型例题,进行解题指导。一、基础知识的储备是解题的必备条件。解题时,首先要掌握金属的三个化学性质,即:1、金属能与氧气发生反应;2、活泼金属能与盐酸和稀硫酸反应;3、位于前面的金属能把位于后面的金
The chemical nature of the metal and the sequence of metal activity has always been the focus of learning, exam in the hot spots. Mostly in the form of choice, exploration, process, from the determination of the strength of metal activity, impurity removal, identification, industrial preparation, composition determination and other aspects of examination. This article will focus on the chemical properties of metals and metal activity sequence of two important test points, select typical examples, problem solving guide. First, the basic knowledge of the reserve is a prerequisite for solving problems. Problem solving, we must first grasp the three chemical properties of the metal, namely: 1, the metal can react with oxygen; 2, the active metal can react with hydrochloric acid and sulfuric acid; 3, located in front of the metal can be located in the back of the gold