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Nov 24 2024, 8:43:39, SunLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345678 ]
Subject: 無聊問題:水可以傳電,為何木不能


Author:
Tatsuya Tanaka
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Date Posted: 01:31:41 08/01/05 Mon

因為水係液體,離子容易流動?
又有人話,電壓高果時木都傳得電,傳唔傳電係睇電壓既不同
咁好似膠呢d,如果夠電壓既話,都會傳電嗎?
如果係....點解要分導電同不導電體....?
希望有人可以解答....

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Replies:
[> Subject: Re: 你應先弄清楚「傳電」的意思


Author:
八郎
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Date Posted: 01:47:53 08/01/05 Mon

你應先弄清楚「傳電」的意思,即導電的原理

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[> [> Subject: Re: 你應先弄清楚「傳電」的意思


Author:
Tatsuya Tanaka
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Date Posted: 02:42:49 08/01/05 Mon

>你應先弄清楚「傳電」的意思,即導電的原理
i know....咁水傳電即係水係導電體?

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[> [> [> Subject: Re: 你應先弄清楚「傳電」的意思


Author:

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Date Posted: 14:10:29 08/01/05 Mon

>>你應先弄清楚「傳電」的意思,即導電的原理
>i know....咁水傳電即係水係導電體?

水導電架咩 =.="....................?

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[> [> [> [> Subject: Re: 你應先弄清楚「傳電」的意思


Author:
Tatsuya Tanaka
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Date Posted: 17:33:54 08/01/05 Mon

如果唔導...點解d人話手濕唔好禁電制

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[> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
六寸釘
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Date Posted: 17:42:52 08/01/05 Mon

>因為水係液體,離子容易流動?
>又有人話,電壓高果時木都傳得電,傳唔傳電係睇電壓既不同
>咁好似膠呢d,如果夠電壓既話,都會傳電嗎?
>如果係....點解要分導電同不導電體....?
>希望有人可以解答....
Water can conduct electricity only in 高電壓, it is not electrolytes(電解質). Electrolytes are those compounds made up of metals and non-metals. They conduct electricity in aqueous solution and in molten state, but cannot conduct electricity in solid state.Water is made up of hydrogen and oxygen, they both not netals, so it is not electrolytes. For example, sodium chloride is made up of sodium(metal) and chlorine(non_metal), so it is electrolytes.

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[> [> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
Tatsuya Tanaka
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Date Posted: 18:43:38 08/01/05 Mon

但係高電壓既話,木都會傳電啵...
咁膠得唔得

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[> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
Red Rabbit
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Date Posted: 00:30:57 08/02/05 Tue

>因為水係液體,離子容易流動?
>又有人話,電壓高果時木都傳得電,傳唔傳電係睇電壓既不同
>咁好似膠呢d,如果夠電壓既話,都會傳電嗎?
>如果係....點解要分導電同不導電體....?
>希望有人可以解答....
你睇下舊野比雷劈下睇下傳唔傳。
電壓夠高乜都得啦

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[> Subject: 試答


Author:
好仁
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Date Posted: 15:56:32 08/02/05 Tue

傳電 : flow of electrons

水能傳電:理論上,純正的水 (distillated pure water)只有極少量的離子(mobile ions),因此導電能力極低。

水濕不要按電制:因為手上的水不是純正的水,例如水喉水就有大量能夠導電的離子,使手上的水成為電解質(electrotyles),故可以傳電。

電壓高可以傳電:正如定義所說,傳電即是電子的流動。當電壓極高時,就能將物質離子化(ionized),從而釋出電子(free electrons),故能通電。打雷正是因為高電壓使空氣被離子化而導電的結果,所以理論上在極高電壓下,任何東西也可導電。

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[> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
hehe
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Date Posted: 23:45:10 08/03/05 Wed

TO六寸釘
好似唔係those compounds made up of metals and non-metals
就係electrolyte喎e.g. ethanoic acid
those compounds made up of metals and non-metals 唔係叫ionic compound咩?

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[> [> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
Kampfer
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Date Posted: 00:11:15 08/04/05 Thu

>TO六寸釘
>好似唔係those compounds made up of metals and
>non-metals
>就係electrolyte喎e.g. ethanoic acid
>those compounds made up of metals and non-metals
>唔係叫ionic compound咩?
ionic compound溶左落solvent就會變ions
ions咪就係用來傳電囉

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[> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:
....
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Date Posted: 00:01:59 08/04/05 Thu

metal + non-metal is electrolyte

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[> [> Subject: Re: 無聊問題:水可以傳電,為何木不能


Author:

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Date Posted: 23:48:20 08/05/05 Fri

>metal + non-metal is electrolyte

錯 :o)

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