气体点燃现象(即颜色)
来源:学生作业帮 编辑:作业帮 分类:化学作业 时间:2024/05/26 11:01:35
气体点燃现象(即颜色)
比如 H2S在氧气中的火焰颜色 什么的 要具体一点的
`````````````````````````````````````````````````````````````````````````````````````````H2S只是举例!我要具体的什么气体在什么环境下点燃是什么颜色!```````````````````````````````````````````````````````````````````````````````````````````````````````````````
比如 H2S在氧气中的火焰颜色 什么的 要具体一点的
`````````````````````````````````````````````````````````````````````````````````````````H2S只是举例!我要具体的什么气体在什么环境下点燃是什么颜色!```````````````````````````````````````````````````````````````````````````````````````````````````````````````
这个太复杂了,有机物,比如酒精都是但蓝色,但乙炔,和苯这种含碳量较高的,会有黑色杂质出来,氢气和氯气燃烧会有苍白色的.
你慢慢学,高一还不急,以后有机会还有什么试验的,我就是选的化学,今天刚好高考考好,我在高一的时候也不是太清楚,读着读着就记住了,好好念书,有的是时间,祝你也能考上好学校
你慢慢学,高一还不急,以后有机会还有什么试验的,我就是选的化学,今天刚好高考考好,我在高一的时候也不是太清楚,读着读着就记住了,好好念书,有的是时间,祝你也能考上好学校
在空气中点燃乙烯,看到的现象?比如气体颜色?火焰颜色?
乙炔点燃气体颜色还有乙烯
初中化学几种气体点燃现象
点燃蜡烛时为什么即是物理现象又是化学现象
点燃一张白纸,观察燃烧前,燃烧时,燃烧后三个过程的现象,(从物质的颜色,状态火焰的颜色等方面观察)
点燃一张白色的纸,观察燃烧前,燃烧时,燃烧后三个过程的现象(从点燃前物质的颜色,状态,火焰的颜色等方面进行观察),并填空
点燃可燃性气体(如H2,CO,CH4,C2H4,C2H2等),点燃可燃性气体前先要检验气体的什么
点燃镁条加些铜粉什么现象
酒精的化学式是什么?点燃可燃性气体前,都要先(),后点燃.
下列气体混合后点燃,可能会发生爆炸的是( )
石蜡受热分解的气体产物通入高锰酸钾溶液中的现象是?通入溴的四氯化碳溶液中的现象是?点燃后的现象是?
点燃一支蜡烛,用一根细玻璃管伸进火焰内层,把从玻璃管中导出的气体点燃,会出现什么现象,由此可以得出什么结论?