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必修一2.1.2氧化钠和过氧化钠|课件

  • 2026-10-01 23:17:43
必修一2.1.2氧化钠和过氧化钠|课件
您好！我是阿泽，90后高中化学一线教师，日常会跟着教学进度更新课件、讲义和学案，欢迎一起交流备课！
课件讲义小偿，如果您有需要可以在后台回复【课件】找到我～
学生在学习第一章的《物质及其变化》时，已经初步建立了类别观；在学习《氧化还原反应》时，又建立了价态观。那么到了第二章的《钠及其化合物》，就需要引导学生综合运用这两个视角，从物质类别和核心元素价态出发，去预测、分析物质的性质。也就是“证据推理与模型认知”这一素养的落地。
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 。

2026新版机械设备安全学习课件

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  1. CONNECT:[ UseTime:0.000769s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000918s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000439s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000340s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000535s ]
  6. SELECT * FROM `set` [ RunTime:0.000312s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000567s ]
  8. SELECT * FROM `article` WHERE `id` = 532470 LIMIT 1 [ RunTime:0.000358s ]
  9. UPDATE `article` SET `lasttime` = 1790923246 WHERE `id` = 532470 [ RunTime:0.001506s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000320s ]
  11. SELECT * FROM `article` WHERE `id` < 532470 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000481s ]
  12. SELECT * FROM `article` WHERE `id` > 532470 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000365s ]
  13. SELECT * FROM `article` WHERE `id` < 532470 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000770s ]
  14. SELECT * FROM `article` WHERE `id` < 532470 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000686s ]
  15. SELECT * FROM `article` WHERE `id` < 532470 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000676s ]
0.081985s