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>高中化学必修二ppt | 05 粗盐提纯及不同价态含硫物质的转化
高中化学必修二ppt | 05 粗盐提纯及不同价态含硫物质的转化
2026-03-30 14:08:56
高中化学必修二ppt | 05 粗盐提纯及不同价态含硫物质的转化
前言:以下是本人林含键课堂教学课件分享(前面已分享了必修二4个课件和必修一55个课时的课件合集
【高中化学必修一ppt】55 期末模拟卷讲评
)。课件获取方式请看文末指引(禁止未授权的二次传播或商用,原创不易,感谢理解!
这一节是学习实验活动4粗盐提纯,利用化学沉淀的方法来除去粗盐中的可溶性杂质,这是初中过滤实验的进一步分离提纯物质
。之后学习不同价态含硫物质的转化,了解硫在自然界中的存在和转化,借助氧化还原反应原理分析转化时试剂的选择,结合实验活动5进行讲解分析总结规律。
课前回顾上节课学习的硫酸的制备过程。
回顾初三课本中的粗盐中难溶性杂质的去除(过滤和蒸发操作)。
根据实验活动4,总结化学沉淀法去除粗盐中杂质离子的流程。借助微观动画视频帮助理解。
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通过问题和讨论,理解实验操作。掌握检验沉淀是否完全的操作方法。
了解自然界中硫的存在和转化。
根据氧化还原反应规律分析不同价态硫的性质。
补充常见氧化剂和还原剂,举例说明不同价态含硫物质转化的试剂选择和现象预测。
通过实验活动5进行具体的分析和理解,掌握相关化学方程式。
这两个实验相对比较熟悉。
总结规律,并且思考分析两个价态变化的例子。
总结和了解化学实验设计、化工工程师。
感谢你的宝贵时间,若你认可我的课件内容,欢迎点个小爱心,敬请继续关注:
如需获取课件(可编辑修改,包括图片视频素材),按下列步骤操作:
步骤一:点击下方“喜欢作者”赞赏7元以上(课件制作不易,感谢理解)
步骤二:完成步骤一的基础上,在公众号对话框留言“必二05”,我看到后会回复下载链接。
若想要必修一整套的课件或是未来必修二整本书的课件(网盘链接),用来修改使用,可加我微信询价购买,扫码添加为好友备注“地区+姓名”。
相关链接:
高中化学必修二ppt | 04 硫酸根离子的检验
高中化学必修二ppt | 03 硫酸
高中化学必修二ppt | 02 二氧化硫的化学性质
高中化学必修二ppt | 01 硫和二氧化硫
必修一合集:
【高中化学必修一ppt】55 期末模拟卷讲评
本文来自网友投稿或网络内容,如有侵犯您的权益请联系我们删除,联系邮箱:wyl860211@qq.com 。
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CONNECT:[ UseTime:0.000852s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001371s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.006913s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004592s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.001418s ]
SELECT * FROM `set` [ RunTime:0.000605s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.001445s ]
SELECT * FROM `article` WHERE `id` = 483611 LIMIT 1 [ RunTime:0.002828s ]
UPDATE `article` SET `lasttime` = 1775603864 WHERE `id` = 483611 [ RunTime:0.032667s ]
SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000959s ]
SELECT * FROM `article` WHERE `id` < 483611 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002100s ]
SELECT * FROM `article` WHERE `id` > 483611 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007346s ]
SELECT * FROM `article` WHERE `id` < 483611 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.012318s ]
SELECT * FROM `article` WHERE `id` < 483611 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.027935s ]
SELECT * FROM `article` WHERE `id` < 483611 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.023071s ]
0.289025s