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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4:碱部分化学性质的实验

  • 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4:碱部分化学性质的实验

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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4：碱部分化学性质的实验

试验报告

实验内容

实验现象

分析与判断

1．测定碱溶液的pH

取两片pH试纸，放在白瓷板上，分别用玻璃棒蘸取稀氢氧化钠溶液、澄清石灰水滴入pH试纸上，将试纸显示的颜色与标准比色卡比较

稀氢氧化钠溶液的pH为

澄清石灰水的

pH为

碱溶液的pH都大于

2．碱和指示剂作用

取两支洁净的试管，分别加入2mL的稀氢氧化钠溶液、澄清石灰水，再分别滴入3滴酚酞溶液，观察颜色变化

酚酞试液变

为

碱溶液都能使酚酞试液

变

3．碱和盐的反应

取一支洁净的试管，加入2mL的稀氢氧化钠溶液，再滴入5滴硫酸铜溶液，观察现象

产生

化学方程式：

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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6:配制50g质量分数为6%的氯化钠溶液

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  137. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/runtime/temp/d9f0991a7dd66afa499551bd49d930d7.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/d.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000595s ] mysql:host=127.0.0.1;port=3306;dbname=d460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000798s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000326s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000301s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000629s ]
  6. SELECT * FROM `set` [ RunTime:0.000208s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000598s ]
  8. SELECT * FROM `article` WHERE `id` = 498558 LIMIT 1 [ RunTime:0.000617s ]
  9. UPDATE `article` SET `lasttime` = 1781282062 WHERE `id` = 498558 [ RunTime:0.000680s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000231s ]
  11. SELECT * FROM `article` WHERE `id` < 498558 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000466s ]
  12. SELECT * FROM `article` WHERE `id` > 498558 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001076s ]
  13. SELECT * FROM `article` WHERE `id` < 498558 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005263s ]
  14. SELECT * FROM `article` WHERE `id` < 498558 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001801s ]
  15. SELECT * FROM `article` WHERE `id` < 498558 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000890s ]
0.083978s