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.
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?
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
