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离子方程式的书写及正误判断是历年高考命题的重要内容,也是学生容易失分的地方,为了更好地掌握这一部分知识,下面对其进行全面总结。一、离子方程式书写步骤1.写:写出化学方程式。2.拆:把易溶且易电离的物质拆成离子形式。3.删:删去方程式两边相同的离子。4.查:检查原子和电荷是否守恒。例1.能正确表示下列反应的离子方程式的是(多选)()
Ionic equation equation is correct and correct judgment of college entrance examination over the years is an important part of the content, but also easy to lose points for students, in order to better grasp this part of the knowledge, the following a comprehensive summary of its. First, the ionic equation writing steps 1. Write: write chemical equations. 2. Demolition: the soluble and easily ionized material into ion form. 3. Delete: Delete the same ion on both sides of the equation. 4. Check: check whether the conservation of atoms and charges. Example 1. The ion equation that correctly represents the following reaction is (multiple choice) ()