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STPM 化学部落各和練習下載+2009 chemistry 重要 topic
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发表于 28-10-2008 02:42 AM
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楼主 |
发表于 28-10-2008 03:27 PM
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inorganic 不是他們不會去教,使他們走錯了方向。以爲inorganic是一大堆要死背的東西。如果真正要教的話,inorganic是很多東西可以討論的。因爲每一group的reaction其實都差不多。所以和organic的讀法是一樣的。 |
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发表于 28-10-2008 03:51 PM
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那麼..你覺得他們(老師)有時間來教我們嗎?
他們多數都在浪費時間 |
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发表于 28-10-2008 04:19 PM
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我想问哦。有chiral carbon 的optical isomer.是算一个还是两个isomer??
就好像cis trans。 cis和trans等于两个isomer |
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发表于 28-10-2008 09:00 PM
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越来越紧张了!
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发表于 28-10-2008 11:57 PM
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Do i need to write every state when writing the equation ?
Ag (s), H2O (l)
If i don't write any state when writing the equation, marks will be deducted ? If I write wrongly (the state), will deduct my marks also?
Therefore, better write the state or not write it out ?? |
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发表于 29-10-2008 12:37 AM
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原帖由 ihciem 于 28-10-2008 11:57 PM 发表
Do i need to write every state when writing the equation ?
Ag (s), H2O (l)
If i don't write any state when writing the equation, marks will be deducted ? If I write wrongly (the state), will deduct ...
seem like only THEMOCHEMISTRY allow to do that |
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楼主 |
发表于 29-10-2008 05:59 PM
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isomerism = n
no of isomer = 2 power of n |
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楼主 |
发表于 29-10-2008 06:05 PM
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if you write it wrongly, marks will be deduct
Actualy only themochemical reaction need to write the state, because is under defination |
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发表于 29-10-2008 07:08 PM
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原帖由 ckkwill 于 29-10-2008 06:05 PM 发表
if you write it wrongly, marks will be deduct
Actualy only themochemical reaction need to write the state, because is under defination
but
example a question
GIVE A EQUTION TO REPRESENT FIRST IONISTAION OF NITROGEN
不是要写Gma? |
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楼主 |
发表于 29-10-2008 11:15 PM
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1st IE is under defination. So must give state.
不確定的話可以重溫thermochemistry, 裏面所有的equation都是under defination 的。 |
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发表于 3-11-2008 10:08 AM
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发表于 3-11-2008 11:27 AM
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发表于 3-11-2008 02:01 PM
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哇
读到EE
成绩一定很好了
羡慕死我了
读EE做么要放 ?
EE很好啊
我要都没有
在哪一间?国立大学吗? |
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发表于 3-11-2008 08:49 PM
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原帖由 mengbai 于 3-11-2008 02:01 PM 发表
哇
读到EE
成绩一定很好了
羡慕死我了
读EE做么要放 ?
EE很好啊
我要都没有
在哪一间?国立大学吗?
有这样说的吗?我想拿EE但是我成绩不是很好 |
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发表于 5-11-2008 07:26 AM
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请问 electrochem 的问题,
几时要用 H2O molecule 几时用 OH- ion?因为2007的问题用 H2O molecule 哦。。乱 =.= |
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发表于 5-11-2008 03:48 PM
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楼主 |
发表于 5-11-2008 11:28 PM
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都一樣的,一個是acidic solution, 一個是alkaline solution, buku data 的全都是acidic solution. |
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发表于 12-11-2008 09:51 PM
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发表于 12-11-2008 10:48 PM
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