,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,LOGO,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Company name,*,人教版 必修,1,第三章 金属及其化合物,第二节 几种重要的金属化合物,人教版 必修1 第三章 金属及其化合物第二节 几种重要的,摩擦剂,阻燃剂,斯达舒,Al(OH),3,Al(OH),3,Al,(OH),3,摩擦剂阻燃剂斯达舒Al(OH)3Al(OH)3Al(OH)3,任务一：阅读说明书,Al(OH),3,+3HCl=AlCl,3,+3H,2,O,Al(OH),3,+3H,+,=Al,3+,+3H,2,O,任务一：阅读说明书Al(OH)3+3HCl=AlCl,逐滴,滴加,氨水,至过量,实验,逐滴,滴加,NaOH,至过量,任务二：动手实践、自主探究,半,滴管,Al,2,(SO,4,),3,半滴管,Al,2,(SO,4,),3,逐滴滴加实验逐滴滴加NaOH任务二：动手实践、自主探究,逐滴,滴加,氨水,至过量,实验,逐滴,滴加,NaOH,至过量,任务二：动手实践、自主探究,思考：,a.,滴加几滴看到什么现象？,b.,继续滴加过量又会如何？,c.,能得出,Al(OH),3,具有什么样的物理性质和化学,性质？,d.,哪组实验更适合实验室制取,Al(OH),3,？,半,滴管,Al,2,(SO,4,),3,半滴管,Al,2,(SO,4,),3,逐滴滴加氨水实验逐滴滴加NaOH任务二：动手实践、自主探,任务二：动手实践、自主探究,有白色沉淀生成，,滴加,氨水,至过量，,沉淀,不消失,逐滴,滴加,氨水,至过量,实验,逐滴,滴加,NaOH,至过量,半,滴管,Al,2,(SO,4,),3,半滴管,Al,2,(SO,4,),3,现象：先产生少量白色沉淀，,后沉淀量增多，达最大,量后，沉淀,消失,任务二：动手实践、自主探究 有白色沉淀生成，逐滴滴,任务二：动手实践、自主探究,逐滴,滴加,氨水,至过量,实验,逐滴,滴加,NaOH,至过量,半,滴管,Al,2,(SO,4,),3,半滴管,Al,2,(SO,4,),3,0,V,NaOH,m沉淀,0,V,NH3H2O,m沉淀,任务二：动手实践、自主探究逐滴滴加氨水实验逐滴滴加NaOH,现象：沉淀,消失,任务二：动手实践、自主探究,沉淀,消失,滴加,HCl,实验,滴加,NaOH,Al(OH),3,Al(OH),3,Al(OH),3,+OH,-,=,AlO,2,-,+2H,2,O,Al(OH),3,+3HCl=AlCl,3,+3H,2,O,Al(OH),3,+3H,+,=Al,3+,+3H,2,O,Al(OH),3,+NaOH=NaAlO,2,+2H,2,O,现象：沉淀消失任务二：动手实践、自主探究 沉淀,Al,2,(SO,4,),3,+6 NH,3,H,2,O=2,Al(OH),3,+3(NH,4,),2,SO,4,Al,3+,+3 NH,3,H,2,O=Al(OH),3,+3 NH,4,+,逐滴,滴加,氨水,至过量,实验,逐滴滴加,NaOH,至过量,半滴管,Al,2,(SO,4,),3,半滴管,Al,2,(SO,4,),3,Al2(SO4)3+6 NH3H2O=2Al(OH),2Al(OH),3,=Al,2,O,3,+3 H,2,O,2Al(OH)3 =Al2O3+3 H2O,Al,2,O,3,Al2O3,任务三：知识迁移、类比学习,请根据以下事实推断氧化铝可能具有的化学性质,:,宝石,(Al,2,O,3,),的清洗应浸泡在稀释的中性清洁剂中，以软毛刷轻擦，然后用清水冲洗干净；,Al2O3坩埚不能加热熔融强酸性和强碱性固体；,未经打磨的铝箔分别放入盐酸和氢氧化钠溶液中，开始没有明显现象，后来有气体生成。,Al,2,O,3,+6HCl=2AlCl,3,+3H,2,O,Al,2,O,3,+6H,+,=2Al,3+,+3H,2,O,Al,2,O,3,+2NaOH=2NaAlO,2,+H,2,O,Al,2,O,3,+2OH,-,=2Al,O,2,-,+H,2,O,任务三：知识迁移、类比学习请根据以下事实推断氧化铝可能具有的,请阅读,P59,资料卡片有关知识，思考：,明矾溶于水电离出,_,离子；,明矾能够净水是由于生成了,_,，氢氧化铝胶体具有很强的吸附能力所以明矾可用作,_,。,任务四：阅读资料、自主学习,K,+,、,Al,3+,、,SO,4,2-,Al(OH),3,胶体,净水剂,请阅读P59资料卡片有关知识，思考：任务四：阅读资料,小结,Al,2,(SO,4,),3,+6 NH,3,H,2,O=2Al(OH),3,+3(NH,4,),2,SO,4,小结Al2(SO4)3+6 NH3H2O=2Al(O,