对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have第三章 烃的含氧衍生物第二节 醛(1)对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have 第三章 烃的含氧衍生物第二节 醛(1)对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have教学目标:1.掌握乙醛的主要化学性质2.了解乙醛的物理性质和用途3.了解醛的分类和命名4.理解饱和一元醛的一般通性 和同分异构现象重点: 乙醛的化学性质对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have1.什么加成反应? 2.乙醇在铜或银作催化剂的条件下被氧化 生成什么产物? 2CH3CH2OH+O2 2CH3-CHO+2H2OCu 2CH3CHO+O2 2CH3-COOHCu 一、醛： 从结构上看，由烃基（或氢原子） 跟醛基相连而成的化合物叫醛。 二、醛的分类： 醛脂肪醛芳香醛一元醛 二元醛 多元醛饱和醛、不饱和醛CnH2n+1CHO 或CnH2nO饱和醛基R 对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have三、醛的同分异构现象除本身的碳架异构外，醛与酮、烯醇、环醇 互为同分异构体如：C3H6OCH3-CH2-C-HO CH3-C-CH3OCH2=CH-CH-OH-OH CH2=C-CH3OH对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have四、乙醛 1、乙醛的物理性质和分子结构 1）乙醛的物理性质 乙醛常温下为无色有刺激性气味的液 体，密度比水小，能与水、乙醇、乙醚、 氯仿等互溶。 2）乙醇的分子结构化学式：C2H4O结构简式：CH3CHO结构式： 乙醇是极性分子HCCHOHH吸 收 强 度10 8 6 4 2 0对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have思考：根据醛基的结 构，判断醛基有哪些 性质？醛基中碳氧双键发生加成反应，被H2还原为醇醛基中碳氢键较活泼，能被氧化成相应羧酸氧化性还原性化 学 性 质HCCHOHH对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have2、乙醛的化学性质1） 氧化反应银镜反应与新制的氢氧化铜反 应实验3-5：取一洁净试管，加入 2ml2%的AgNO3溶液，再逐滴滴入2%的 稀氨水，至生成的沉淀恰好溶解。 ：在配好的上述银 氨溶液中滴入三滴乙醛溶液，然后把试管 放在热水浴中静置。Ag+NH3H2OAgOH +NH4+ AgOH+2 NH3H2O=Ag(NH3)2+OH- +2H2O配制银氨溶液水浴加热生成银镜出现漂 亮的银 镜对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we haveCH3CHO 2Ag(NH3)2OH CH3COONH42Ag3NH3H2O（银氨溶液）还原剂氧化剂乙醛能被弱氧化剂氧化与新制的氢氧化铜反 应实验3-6 1、配制新制的Cu(OH)2悬浊液：在 2ml10%NaOH溶液中滴入2%CuSO4 溶液48滴，振荡。Cu2+2OH-= Cu(OH)22、乙醛的氧化：在上述蓝色浊液中加入 0.5ml乙醛溶液，碱必须过量加热至沸腾。CH3CHO + 2Cu(OH)2 CH3COOH 2H2OCu2O砖红色氧化剂还原剂 乙醛能否被强氧化剂氧化?对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have 常用的氧化剂：银氨溶液、新制的Cu（OH）2、O2、 酸性KMnO4溶液、酸性K2Cr2O7溶液等。（1）试管内壁必须洁净；（2）必须水浴；（3）加热时不可振荡和摇动试管；（4）须用新配制的银氨溶液；（5）乙醛用量不可太多；（6）实验后，银镜用HNO3浸泡，再用水洗银镜反应注意事项对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we haveCH3CHO H2 CH3CH2OH催化剂2） 加成反应（加H2还原）P.58 学与问1、写出甲醛发生银镜反应，以及 与新制氢氧化铜反应的化学方程式2、3、CH3CHO CH3COOH【O】CH3CH2OH【O】对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds th