2022年《钠镁及其化合物》教案 .pdf

《2022年《钠镁及其化合物》教案 .pdf》由会员分享，可在线阅读，更多相关《2022年《钠镁及其化合物》教案 .pdf（4页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。

1、学习好资料欢迎下载第二单元钠、镁及其化合物第 1 课时金属钠的性质与应用一、学习目标1知道钠的物理性质和用途。2掌握钠的化学性质。3建立钠原子结构决定金属钠的性质的思想。4在实验过程中，体验化学的魅力和科学研究的方法。二、教学重点及难点钠的物理性质和化学性质。三、设计思路整合由氯化钠制取氯气、溴和碘的制取线索，引出本节课的研究主题 钠，学生通过“观察与思考”中的实验现象，逐一分析并总结出有关钠的物理性质和化学性质，在介绍钠的用途的基础上，简单介绍钠的氧化物的主要化学性质。四、教学过程情景导入 由溴、碘和氯气的制取，推出它们和氯化钠之间的关系，再由电解熔融氯化钠引出本节课要探究的金属钠。板书 2

2、NaCl2NaCl2钠原子和钠离子的原子结构示意图。思考与讨论 对比钠原子和氯原子的结构，推测金属钠可能的性质。观察与思考1取一小块金属钠，用滤纸吸干表面的煤油，用小刀切去一端的表层，观察表面的颜色；将其放置放置在空气中，观察表面颜色的变化。学生通过观察实验现象，分析产生该现象的原因，归纳、总结金属钠的物理性质和化学性质。板书 一、钠的物理性质银白色金属，质软，密度比煤油大、0.97g/cm3。二、钠的化学性质1可与氧气发生反应学习好资料欢迎下载4NaO22Na2O 白色观察与思考 2 将一小块金属钠放在石棉网上加热，观察现象。板书 2NaO2 Na2O2过氧化钠，淡黄色叙述 同样是钠与氧气反

3、应，但是反应条件不同时，现象不同，产物也不同，所以我们要具体问题具体分析。观察与思考 3 向一只盛有水的小烧杯中滴加几滴酚酞，然后向其中投入一小块（约绿豆粒般大小）金属钠，用表面皿盖在烧杯上，观察实验现象。板书 一、钠的物理性质熔点低，97.8。二、钠的化学性质2可与水发生反应2Na2H2O2NaOHH2思考与讨论 通过对实验的讨论，能解决下列问题：1金属钠为何保存在煤油中？2为何有些保存在煤油中的钠表面不是银白色的？3解释产生钠与水反应时现象的具体原因。4钠与氧气反应的产物取决于什么？5在所学知识中搜索有关反应的例子，要求因为反应条件不同而导致产物不同。（学生可能举例炭和氧气的反应等）过渡

4、钠作为一种非常活泼的金属，我们在生活中直接使用的机会不大，那这种金属有哪些用途呢？板书 三、钠的用途1做还原剂：用以将钛、锆、铌、钽等在国防工业上有重要用途的金属从其熔融的卤化物中还原出来。TiCl44NaTi4NaCl 四氯化钛钛文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK

5、5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5

6、G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:

7、CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2

8、HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 Z

9、X5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编

10、码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2学习好资料欢迎下载2做电光源：高

11、压钠灯。3制造合金：钠钾合金用做核反应堆的冷却剂和热交换剂。4做化工原料。过渡 接下来我们了解一下钠的一种氧化物氧化钠的主要化学性质。板书 四、氧化钠1与水反应生成氢氧化钠，因此氧化钠是碱性氧化物Na2OH2O2NaOH 2与酸反应Na2O2HCl2NaCl H2O 练习 1.金属钠应保存在（）A.空气中B.水中C.煤油中D.密闭容器中答案：C。2.钠应用于电光源是因为（）A.钠很软B.高压钠灯发出的黄光射程远，透雾力强C.是一种强还原剂 D.那燃烧发出黄色火焰答案：B。3.钠与水反应时产生的现象是（）钠浮在水面上；钠沉在水底；钠熔化成小球；钠迅速游动逐渐减小，最后消失；发出嘶嘶的声音；滴入酚

12、酞后溶液显红色。A.B.C.D.答案：D。4.将 2.3g 钠放入 100g水中，所得溶液的质量分数是（不考虑水的挥发）（）A.等于 2.3B.等于 4C.大于 2.3，小于 4D.不能确定答案：B。5.将 1 克的下列金属，分别与足量的盐酸反应，放出氢气最多的是（）A.锌B.铁C.铝D.钠答案：C。6.关于 Na 原子和钠离子的下列叙述不正确的是（）文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2

13、文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6

14、W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N

15、9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8

16、X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5

17、X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F

18、2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1

19、I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2学习好资料欢迎下载A.它们相差 1 个电子层B.它们的化学性质相似C.钠原子的半径比钠离子大D.它们核内的质子数相同答案：B。7.一块表面已被氧化的钠，质量为10.8g，将其放入 100mL 水中，可收集到标准状况下 2.24L气体，则钠元素的质量分数为？答案：钠元素的质量分数为42.6。文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P

20、5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2

21、文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6

22、W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N

23、9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8

24、X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5

25、X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2文档编码:CR10S5X6W4O2 HK5L6F2N9P5 ZX5G4V1I8X2