2022年人教版必修化学1第二章化学物质及其变化第三节《氧化还原反应》教学设计 .pdf

人教版必修 化学 1 第二章化学物质及其变化第三节氧化还原反应教学设计（2 课时）氧化还原反应教学设计（第二课时）一、教学分析（一）、教材分析氧化还原反应安排在高中化学必修1 第二章化学物质及其变化中的第三节，有其重要的意义。因为在中学阶段的基本概念、基础理论知识中，氧化还原反应占有极其重要的地位，贯穿于中学化学教材的始终，是中学化学教学的重点和难点之一。在中学化学中要学习许多重要元素及其化合物的知识，凡涉及元素价态变化的反应都是氧还原反应。而且金属的腐蚀及电化学部分是氧化还原的重要应用。只有让学生掌握氧化还原反应的基本概念，才能使他们理解这些反应的实质。学生对本节教材掌握的好坏直接影响着其以后对化学的学习。本节教材安排在这里是承前启后，它既复习了初中的基本反应类型及氧化反应、还原反应的重要知识，并以此为铺垫展开对氧化还原反应的较深层次的学习，还将是今后联系元素化合物知识的重要纽带。氧化和还原是一对典型矛盾，它们既是相反的，又是相依存的，通过认真引导使学生逐步理解对系统规律在自然现象中的体现，又会帮助学生用正确的观点和方法学习化学知识。此节内容分两部分，第一是介绍氧化还原反应的概念，第二是了解常见的氧化剂和还原剂及氧化还原反应的应用。（二）、学生分析1、学生在前节课中已经从化合价和电子转移的角度认识了氧化还原反应，知道了氧化还原反应的判断和本质。2、学生在初中化学一年的学习中只对化学知识有了初步了解，有了一定的搜集和处理信息的能力、获取新知识的能力、分析和解决问题的能力以及交流与合作的能力，但仍有待提高。二、教学目标（一）、知识与技能：1、通过对典型化学反应的分析，理解氧化还原反应的本质是电子转移，学会用“双线桥法”、“单线桥法”分析化合价升降、电子得失及判断氧化剂和还原剂。2、了解氧化还原反应在日常生活、生产中的应用。（二）、过程与方法：通过对典型化学反应的分析，培养学生的知识应用能力。（三）、情感态度与价值观：通过“思考与交流”、“问题探究”、“学以致用”等活动，培养学生的合作意识。三、教学重、难点教学重点：氧化剂和还原剂的判断、电子转移的表示方法、转移电子数的计算教学难点：单线桥法、双线桥法标氧化还原反应四、教学策略及方法为了突破重点、难点，调动学生的思维，让他们积极参与到教学过程中，我采用“讨论练习归纳”的教学方法，通过设计富有驱动性、环环相扣的问题，让学生思考、讨论，通过练习让学生巩固，最后归纳总结规律，在解决问题的过程中逐步将学生的认识引向深入。五、教学流程复习氧化还原反应的判断引出氧化剂、还原剂概念练习指出氧化还原反应中化合价发生变化的具体物质从电子转移的角度讨论氧化剂、还原剂练习归纳双线桥法标氧化还原反应练习归纳单线桥法标氧化还原反应氧化性、还原性与化合价的关系通过日常生活中的事例讨论氧化还原反应的应用分层训练小结与作业安排练习、归纳、总结巩固当堂所学知识氧化还原反应中电子转移的表示方法引出氧化剂、还原剂本质思考、交流交流、探究对比、归纳思考、交流加深对氧化还原反应的认识元素化合价与氧化性、还原性关系探究、归纳文档编码:CN10T9S8M3F6 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1】：下列化学反应中，哪些属于氧化还原反应？为什么？【思考 2】：哪些元素的化合价升高了？哪些元素的化合价降低了？指出含有这些元素的具体物质。CuCl2CuCl2ZnH2SO4ZnSO4+H2CaCO32HCl CaCl2H2O CO2Cl2H2OHCl HClO 独立思考，回忆所学知识；作出判断复习巩固前节课中氧化还原反应知识判断氧化剂和还原剂【问题探究1】：什么是氧化剂和还原剂？【学以致用】：下列反应中，哪些是氧化剂？哪些是还原剂？CuCl2CuCl2ZnH2SO4ZnSO4+H2CaCO32HCl CaCl2H2O CO2Cl2H2OHCl HClO 阅读教材，交流、归纳独立思考，运用所学知识做出判断引出氧化剂、还原剂概念通过练习巩固氧化剂和还原剂概念【问题探究2】：从电子转移的观点说明氧化剂、还原剂的实质是什么？板书：二、氧化剂和还原剂失 e的反应物所含元素化合价升高还原剂具有还原性发生氧化反应得 e的反应物所含元素化合价降低氧化剂具有氧化性发生还原反应相互讨论思考记笔记从氧化还原反应反应的实质来分析氧化剂和还原剂，加深对氧化还原反应的认识文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 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ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7双线桥法标氧化还原反应【思考与交流1】：怎样表示氧化还原反应中电子的转移？2CuOC 2CuCO2板书：1、双线桥法：步骤：.先标化合价，双线桥从左指向右连接不同价态的同种元素.线上标明电子得失数.指出氧化还原类型【学以致用】：用双线桥法分析氧化还原反应，并标明氧化剂和还原剂，那种物质发生氧化反应，那种物质发生还原反应.ZnH2SO4 ZnSO4H2.C2CuO2CuCO2板书：规律：.电子得失的总数相等.电子得失总数与化合价升降总数相等一边聆听一边动手总结归纳双线桥标氧化还原反应的注意事项动手解题找出规律通过典型例题得出用双线桥标氧化还原反应的步骤，巩固电子得失与化合价关系通过练习巩固双线桥的表示方法单线板书：2、单线桥法：步骤：.单箭号.箭号起点为被氧化元素（失电子）元素。终一边聆听一边动手通过典型例题得出用单线桥标氧文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7桥法标氧化还原反应点为被还原（得电子）元素.只标转移电子总数，不标得与失。规律：得电子数=失电子数=转移的电子数【学以致用】：用单线桥法分析氧化还原反应，并标明氧化剂和还原剂，哪种物质发生氧化反应，哪种物质发生还原反应？1.Zn H2SO4ZnSO4 H22.C2CuO 2CuCO23、2KClO32KCl 3O2总结归纳单线桥标氧化还原反应的注意事项，并与双线桥法进行对比练习、思考、交流化还原反应的步骤，得出氧化还原反应反应中电子转移的计算方法通过练习巩固单线 桥 的 表 示 方法，巩固电子转移的计算了解氧化性、还原性、氧化剂、还原【思考交流2】：元素价态与氧化性、还原性的关系试判断下列元素所处价态的氧化性、还原性：0+2+3-2 0+4+6 0+1+2 Fe Fe Fe S S S S Cu Cu Cu 元素处于最低价：只有还原性，无氧化性元素处于最高价：只有氧化性，无还原性元素处于中间价态：既有氧化性，又有还原性思考、交流、回忆氧化性和还原性概念回答问题，进行组间交流；其他同学进行补充、评价。从元素化合价角度来理解氧化性和还原性形成规律，方便学生记忆文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7剂【知识迁移】：常见的氧化剂和还原剂有哪些？板书：3、常见氧化剂和还原剂常见氧化剂：O2、Cl2、浓硫酸、HNO3、KMnO4、FeCl3等常见还原剂：Na、Mg、Al、Zn、Fe、H2、C、CO 等阅读教材，理解氧化剂、还原剂的性质培 养 学 生 的 自学、归纳、整理能力氧化还原反应的应用【思考与交流3】：板书4、氧化还原反应的应用：1、窗户上的铁栏杆常刷上油漆，这样做的目的是什么？2、一些容易变质食品常采用真空包装或往包装袋中装入一小包铁粉，这样做的目的是什么？3、通过上述问题，你是如何理解氧化还原反应的？氧化还原反应在工农业生产和日常生活之间有何应用？你还能举出哪些例子说明氧化还原反应在工农业生产和日常生活中的应用。回答问题，进行组间交流；其他同学进行补充、评价。思考、回答通过列举日常生活 中 常 见 的 实例，说明氧化还原反应与我们的生活密切相关。培养学生的发散思维能力分层训练【必做题】：1、实现下列变化，一定要加入其它物质作氧化剂的是（）ACaCO3CO2 BNaClNaNO3CZnZnCl2DCuO CuSO42、下列反应中，SO2作还原剂的是（）A2H2SSO23S 2H2O BSO22Mg2MgO S CCl2SO22H2OH2SO4 2HCl DSO2+2NaOHNa2SO3+H2O 回忆所学知识，独立思考问题，寻求答案通过分层训练使不同层次的学生都得到提高巩固当堂所学的基础知识【选做题】：3、在 K2Cr2O714 HCl2KCl 2CrCl33Cl2 7H2O 反应中，元素得电子，化回忆所学知识，独立思考问题，寻求答案通 过 综 合 性 习题，加深所学内容的理解。培养文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7合价，是氧化剂，被还原；元素失电子，化合价，是还原剂；被氧化。综合应用能力小结与作业安排【课堂小结】：二、氧化剂和还原剂1、双线桥法2、单线桥法3、常见氧化剂和还原剂4、氧化还原反应的应用作业：1、教材课后习题P38：2、3、7、8、9、10 2、课外同步练习2（自编）整理记录知识点记录培养学生归纳整理能力，与前面的学习目标相呼应用顺口溜记忆更好巩固本堂内容七、板书设计氧化还原反应（第二课时）二、氧化剂和还原剂失 e的反应物所含元素化合价升高还原剂具有还原性发生氧化反应得 e的反应物所含元素化合价降低氧化剂具有氧化性发生还原反应1、双线桥法：步骤：.先标化合价，双线桥从左指向右连接不同价态的同种元素.线上标明电子得失数.指出氧化还原类型规律：.电子得失的总数相等.电子得失总数与化合价升降总数相等2、单线桥.单箭号.箭号起点为被氧化元素（失电子）元素，终点为被还原（得电子）元素.只标转移电子总数，不标得与失。规律：得电子数=失电子数=转移的电子数文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 HZ4H4Z3D3X8 ZZ5E4G1H3Q7文档编码:CN10T9S8M3F6 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