Most covalent substances are molecular substances which consist of molecules. Since a molecule is neutral, covalent substances made of molecules do not conduct electricity in molten state.
E.g.pure water does not conduct electricity because water does not ionize to a large extent.
我想問上面段野講咩?
係咪即係話covalent bond substance 係唔導電?
咁點解covalent substance 係唔導電?
pure water唔導電,係因為water does not ionize to a large extent?
唔係好明咩係ionize to a large extent..?
covalent bond of F.3 chemistry
2009-08-09 3:23 pm
回答 (2)
2009-08-09 11:44 pm
✔ 最佳答案
請睇呢個連結http://hk.myblog.yahoo.com/wilson_007_35/article?new=1&mid=1068
會有解答
放心冇毒, 因為呢個係yahoo blog
2009-08-09 5:50 pm
1.無錯,covalent bond substance是不導電的,.不過以上的這段其實說得不太清楚!
2.其實佢話covalent substance係neutral其實指covalent substance不是由ion(帶-ve)所組成,所以係唔會係molten/aqueouse state到變成mobile ions而導電.
3.其實ionize呢個f.3就係未須要知的,不過其實佢的說法好像有點不太對應該不是從書本找出的吧!
4.ionize係指,係指d compound(由其ionic)d ions會分開左,形成mobile ions,不過呢d一般係指d ionic compound,好少見人拿來形容水.
其實佢係想指水係唔會大量好似d ionic compound咁係水中d ions分離.
2.其實佢話covalent substance係neutral其實指covalent substance不是由ion(帶-ve)所組成,所以係唔會係molten/aqueouse state到變成mobile ions而導電.
3.其實ionize呢個f.3就係未須要知的,不過其實佢的說法好像有點不太對應該不是從書本找出的吧!
4.ionize係指,係指d compound(由其ionic)d ions會分開左,形成mobile ions,不過呢d一般係指d ionic compound,好少見人拿來形容水.
其實佢係想指水係唔會大量好似d ionic compound咁係水中d ions分離.
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090809000051KK00367