[高三化学苏教版总复习1-3-1从铝土矿到铝合金79张.ppt

[解析]铝在常温下与空气中的氧气反应 ，在铝表面形成一层致密的氧化膜；铝与氯气反应生成氯化铝；氧化铝是两性氧化物，既能与酸反应，也能与碱反应。金属铝既能与强酸溶液反应，又能与强碱溶液反应。如：与HCl、NaOH溶液都反应，且都放出氢气，故答案选C。 [答案]C [解析]性质活泼的金属很难以游离态存在，一般被人们发现、使用得较晚；生铁中含有杂质，会形成原电池，比纯铁易被腐蚀；单质铝不易被腐蚀，是因为其与氧气反应在其表面形成的致密的氧化膜，保护内部金属不被腐蚀。本题答案为A。 [答案]A [解析]A选项，铝、铁、镁都可与盐酸反应产生无色气体，因此不能得出含铝、铁、镁元素的结论，A错误。B选项，铝、铁、镁三种金属中只有铝有与NaOH溶液反应产生无色气体，所以B正确。C选项，氢氧化镁与氢氧化铝均为白色沉淀，C错误。D选项，用盐酸溶解后亚铁离子在空气中易被氧化成Fe3＋，加入KSCN溶液呈血红色，D正确。 [答案]BD Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Prof