当前位置：首页>防城港>南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题3:二氧化碳的实验室制取

南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题3:二氧化碳的实验室制取

  • 2026-06-11 05:07:51
南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题3:二氧化碳的实验室制取

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南宁市2026年初中学业水平考试

理化实验操作性考试知识要点及评定记录

（学生用）化学科-

课题3：二氧化碳的实验室制取

实验报告：

实验步骤

实验现象

分析与判断

1．选择仪器和试剂

2．组装制取装置

3．

3．检查装置的气密性：

将导管的一端浸入盛有水的烧杯中，用手握住反应容器外壁，观察现象。

导管口有冒出

证明气密性

4．制取二氧化碳气体

有产生

化学方程式：

5．收集二氧化碳气体

6．验满：将燃着的木条放在

燃着的木条

证明已收集满

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南宁市2026年初中学业水平考试理化实验操作性考试知识要点及评定记录(学生用)化学科-课题1:粗盐中难溶性杂质的去除

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  140. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000454s ] mysql:host=127.0.0.1;port=3306;dbname=d460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000619s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001305s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000425s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000565s ]
  6. SELECT * FROM `set` [ RunTime:0.000211s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000591s ]
  8. SELECT * FROM `article` WHERE `id` = 498554 LIMIT 1 [ RunTime:0.000373s ]
  9. UPDATE `article` SET `lasttime` = 1781282064 WHERE `id` = 498554 [ RunTime:0.000687s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000230s ]
  11. SELECT * FROM `article` WHERE `id` < 498554 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000385s ]
  12. SELECT * FROM `article` WHERE `id` > 498554 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002371s ]
  13. SELECT * FROM `article` WHERE `id` < 498554 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006580s ]
  14. SELECT * FROM `article` WHERE `id` < 498554 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001505s ]
  15. SELECT * FROM `article` WHERE `id` < 498554 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001410s ]
0.086538s