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初中化学精品课件 化学侦探——寻找失踪的元素 化学用语大单元复习

  • 2026-04-15 22:00:02
初中化学精品课件 化学侦探——寻找失踪的元素 化学用语大单元复习

化学侦探—寻找失踪的元素

          ——化学用语大单元复习

                           （融合AI）

单

元

主

线

      在化学的世界里，元素们就像一个个神秘的“嫌疑人”，而我们就是专业的“化学侦探”。今天，就让我们一起走进九年级化学用语复习的世界，用我们的智慧和知识，解开元素失踪之谜！

01

1

第一现场：微粒的“身份之谜”

        在化学的微观世界里，分子、原子、离子是构成物质的基本“嫌疑人”。它们虽然看不见、摸不着，但通过化学用语，我们可以精准地判断它们的身份。

02

2

第二现场：元素周期表的“密码”

       元素周期表是化学侦探的“藏宝图”，它隐藏着元素的秘密。每个元素都有自己的“指纹”——原子序数、质子数、电子数等

03

3

第三现场：化学式的“拼图游戏”

       化学式是元素的“身份证”，它告诉我们物质是由哪些元素组成的，以及这些元素的比例关系。

04

4

第四现场：

元素的“失踪之谜”

现在，我们来到了最关键的现场——元素失踪之谜。通过一系列的实验和推理，我们可以找到失踪的元素。

（包含导学案）

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  1. CONNECT:[ UseTime:0.000761s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001057s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000398s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000317s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000740s ]
  6. SELECT * FROM `set` [ RunTime:0.000268s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000723s ]
  8. SELECT * FROM `article` WHERE `id` = 482021 LIMIT 1 [ RunTime:0.000506s ]
  9. UPDATE `article` SET `lasttime` = 1777245190 WHERE `id` = 482021 [ RunTime:0.006973s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000319s ]
  11. SELECT * FROM `article` WHERE `id` < 482021 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000522s ]
  12. SELECT * FROM `article` WHERE `id` > 482021 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000538s ]
  13. SELECT * FROM `article` WHERE `id` < 482021 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011105s ]
  14. SELECT * FROM `article` WHERE `id` < 482021 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001285s ]
  15. SELECT * FROM `article` WHERE `id` < 482021 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011931s ]
0.118630s