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一、知识综述元素与化合物知识主要内容有:氧、氢、碳及其重要化合物;铁及铁合金;酸、碱、盐的性质及其代表物.元素与化合物知识以实验为基础,以基本理论为指导,构成了初中化学的基础和骨架,在中考化学中占有较大的比重,其分值在35％左右.本文以2004年各地中考试题为例说明.二、重点考点元素与化合物知识的重点考点见下表.
First, the knowledge review elements and compound knowledge The main contents are: oxygen, hydrogen, carbon and its important compounds; iron and iron alloys; acid, alkali, salt properties and their representatives. Elemental and compound knowledge based on experiments, based on the basic theory As a guide, it constitutes the basis and skeleton of junior high school chemistry, and it occupies a large proportion in the chemistry of middle school exams, with a score of about 35%. This article uses the 2004 mid-test questions as an example to explain. Second, the focus of the test elements and compound knowledge The key test points are shown in the table below.