高一化学必须修读二1_2_2.ppt

第2课时　元素周期表和元素周期律的应用 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. 课堂互动讲练 探究整合应用 知能优化训练 第2课时 课前自主学案 学习目标 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. 1.了解元素周期表的简单分区。 2.认识周期表是元素周期律的具体表现形式。 3.了解元素周期表和元素周期律的应用。 4.体会元素周期表和元素周期律在科学研究和工农业生产中的指导意义。 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. 一、元素的金属性和非金属性 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. 二、元素的化合价与元素在周期表中位置之间的关系 主族 ⅠA ⅡA ⅢA ⅣA ⅤA ⅥA ⅦA 元素符号 Na Mg Al Si P S Cl 最外层电子数 1 2 3 4 5 6 7 最高正化合价 ＋1 ＋2 ＋3 ___ ＋5 ＋6 ___ 最低负化合价 －4 －3 －2 －1 ＋4 ＋7 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. 1.主族元素 最高正化合价＝___________＝______________ (价电子数) 2．非金属元素 ?最高正价＋|最低负价|＝____ 族序数 最外层电子数 最外层电子数 8电子 8 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. 三、元素周期表和元素周期律的应用 1．根据元素在周期表中的位置推测其 ____________和性质。 2．根据元素的____________推测它在周期表中的位置。 3．指导新元素的发现及预测它们的原子结构和性质。 4．指导其他与化学相关的科学技术。 原子结构 原子结构 Evaluation only. Created with Aspose.Slides for .