天气预报 > 教育 > 鉴别铜和铁的化学方法
鉴别铜和铁的化学方法
更新时间: 2021-05-30 02:09:14  

1、淋水上去,静置十几分钟,有红色或橙黄色粉末或斑出现的是铁,铜没有变化。

2、滴加稀盐酸或稀硫酸,有气泡出现的是铁,无气泡的是铜。

3、从密度。铜的密度比铁的密度大。方法:同体积的铜和铁,铜的质量大,(用天平可区别)反之:同质量的铜和铁,铜的体积小。

关键词: 鉴别 化学 方法

鉴别铜和铁的化学方法相关经验

天气预报

最新推荐

页面:/news/view-408380/ | 耗时:0.7875 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=408380 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=408380 LIMIT 0,1
select * from tbl_Articles_sphinx where id=408380 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(396368,798518,1110321,1152314,408979,386720,736631,943540,1154238,842319,805096,1718330,1304993,1096981,604524,1905428,1122372,1103202,1038146,625043,762753,942681,1228559,1896845,1111424,1481978,1992398,631293,1008130,543330) ORDER BY field (ArticleID,396368,798518,1110321,1152314,408979,386720,736631,943540,1154238,842319,805096,1718330,1304993,1096981,604524,1905428,1122372,1103202,1038146,625043,762753,942681,1228559,1896845,1111424,1481978,1992398,631293,1008130,543330)