【把脉中考动向】《常见的盐化学肥料》是第七章《应用广泛的酸、碱、盐》中最后讲授的内容,但也是最难的内容之一。同时这部分内容也是中考的重点和热点,所占分值也较高,在复习时应引起重视。中考试题中关于这部分内容主要考查的知识点有:盐的性质、粗盐的提纯、复分解反应及其发生条件、化学肥料、综合探究题。考查的形式多样,在选择题、填空题、 “The pulse of the test” Common salt chemical fertilizer “is the seventh chapter” widely used acid, alkali, salt, "the last lecture, but also one of the most difficult content. At the same time this part of the content is also the focus and hot spot in the exam, the higher the score, should pay attention to the review. In the examination questions on the main contents of this part of the test points are: the nature of salt, crude salt purification, metathesis reaction and its conditions, chemical fertilizers, comprehensive exploration questions. Various forms of test in the multiple choice questions, fill in the blank question,