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离子方程式正误判断是高考的重点、热点、渗透点.考查的目的主要是了解考生使用化学用语的准确程度和熟练程度,具有一定的综合性.下面结合近几年高考离子方程式正误判断试题,对题目中设置为错误的离子方程式的一些常见错误原因进行归纳、分析.供同学们参考.一、从“拆写”规则上突破离子方程式正误判断最基本的前提是不能违背客观事实,正确准确地表达反应事实,应先判断发生反应是否属于离子反应,再弄清各物质是否该拆写.因此,一定要注意:1离子反应多
Ionic equation positive and false judgments are the focus of college entrance examination, hot spots, infiltration point.The purpose of the test is to understand the candidates using the chemical language accuracy and proficiency, with a certain degree of comprehensiveness.Considering the recent years, the ion equation positive and false positive test questions, right Questions set to the wrong ion equation some common causes of error induction, analysis.For the students to reference.From “dismantling ” rules to break the ion equation positive and false positive and negative judgment of the most basic premise is not to be contrary to objective facts, correct Accurately expressed the fact that the reaction should first determine whether the reaction is an ion reaction, and then find out whether the material should be written. Therefore, we must pay attention to: 1 ion reaction