CE chem
我想問你地點溫chem架?d equation又多, reaction又多, properties仲多
背晒佢:icon110:?
仲有係detect different ions同distinguish兩樣野個d我覺得最難...
你地有冇d咩方法or口"決"去記架??
我知既有兩個
1 Chemical cell Anode is Negative(CAN)
2 HE LIes BEcause Boron Can Not Oxidize Fluorine Neon (helium lithium beryllium boron carbon nitrogen oxygen fluorine neon) 我用中文:o
不過我知類似有red cat,an ox
oil rig 呢D Originally posted by pancake at 2005-3-30 01:47 AM:
我用中文:o
不過我知類似有red cat,an ox
oil rig 呢D
我都有用中文背頭廿個elements...不過而家俾埋periodic table:icon101:
咩係oil rig? Originally posted by tsubasa at 2005-3-30 10:43:
我都有用中文背頭廿個elements...不過而家俾埋periodic table:icon101:
咩係oil rig?
OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON:icon101: Originally posted by Raul at 2005-3-30 10:47 AM:
OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON:icon101:
唔使咁記ar ma?
我係咁諗: oxidizing agent->undergo reduction
reducing agent->undergo oxidation
Chem我都唔係咁中意, 好多顏色背
最好就係mole calculation, 唔使背野, 一味sub數就計完, 實無錯
Periodic table 仲有下一句, 唔知咩Nations X all sign peace X X agreement
F3個sir 教而家好多都唔記得:icon083:
[ Last edited by 2076 on 30-3-2005 at 01:44 PM ] Originally posted by Raul at 2005-3-30 10:47 AM:
OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON:icon101:
唔好玩啦
OA點會放電子呀:icon101: Originally posted by kawai at 2005-3-30 17:28:
唔好玩啦
OA點會放電子呀:icon101:
我乜都唔知:icon101: Originally posted by Raul at 2005-3-30 05:33 PM:
我乜都唔知:icon101:
你會唔知:icon092::icon101: Oxidation is lose of electrons (OIL)
Reduction is gain of electrons (RIG)
MnO4 -, Cl2, Cr2O7 2-, Br2, Ag+, NO3-, Fe3+, I2, O2, Cu2+, H2SO4, H+, Pb2+
Mon Cha Cha Ban Fi OCean SHiP :o 其實本身我係想問大家溫chem有乜心得, 點知個個都講左d口訣出黎:icon101::icon101:
ps. 有冇人補k kwong? Originally posted by tsubasa at 2005-3-30 07:29 PM:
其實本身我係想問大家溫chem有乜心得, 點知個個都講左d口訣出黎:icon101::icon101:
ps. 有冇人補k kwong?
溫chem, 要背colour, observation, equation(不過好多都可以即場砌),
reaction, reactivity series(+ECS), plastic, organic chem d formula,
experiment procedure, 唯一唔使背係mole calculation
基本上係一科要死背既科, 平時我唔會點溫, 考mock之前,
或者放假時會做d exercise, 做下past paper咁
ps. 我補緊佢intensive, 上堂勁悶, 份notes 又勁多野,
補左=冇補, but阿媽又逼我補:( Originally posted by 2076 at 2005-3-30 09:02 PM:
溫chem, 要背colour, observation, equation(不過好多都可以即場砌),
reaction, reactivity series(+ECS), plastic, organic chem d formula,
experiment procedure, 唯一唔使背係mole calculation
基本上 ...
我d fd同我講話佢話自己係god father of chemistry:icon110::icon110:
但上年有補佢既人都係比其他人拎多一分咁大把 Oil fraction - By K.K. (我不知道那個補習老師講粗口):icon101:
你個PK GirlFriend 好 Low B
你(普通話:ni) - naphtha
P - petrol
K - Kerpsene
G - Gas Oil
F - Fual Oil
L - Lubricating oil and waxes
B - Bitumen K. Kwong 係一個勁人會越補越勁, 渣人會越補越渣的老師:icon101: Originally posted by vctwl at 2005-3-30 10:22 PM:
K. Kwong 係一個勁人會越補越勁, 渣人會越補越渣的老師:icon101:
勁人越補越勁我信, 但邊有可能渣人會越補越渣?
話時話, 我已經唔想再補佢, 一個月成450蚊,
又唔係幾學到野, 留番D錢畀我買套戲去睇仲好 Originally posted by tsubasa at 2005-3-30 01:37 AM:
仲有係detect different ions同distinguish兩樣野個d我覺得最難...
arm arm 睇到呢句, 其實都好易, 背晒顏色/溶解通天下:
主要睇顏色, 例如藍色多數Cu2+, 綠色係Fe2+,
另外要留意+OH-出ppt既顏色同excess NAOH/NH3有D會redissolve
distinguish different compound cation 就睇顏色
anion 就麻煩D, 不外乎加Silver Nitrate, Magnesium sulphate之類
當然仲要記邊D salt soluble/insoluble
例如hydrogencarbonate, nitrates, Potassium, Sodium and
ammonium compounds are all soluble
halides are soluble except AgX and PbX2... Originally posted by vctwl at 2005-3-30 10:20 PM:
Oil fraction - By K.K. (我不知道那個補習老師講粗口):icon101:
你個PK GirlFriend 好 Low B
你(普通話:ni) - naphtha
P - petrol
K - Kerpsene
G - Gas Oil ...
好好記:icon101: Originally posted by 2076 at 2005-3-30 10:37 PM:
arm arm 睇到呢句, 其實都好易, 背晒顏色/溶解通天下:
主要睇顏色, 例如藍色多數Cu2+, 綠色係Fe2+,
另外要留意+OH-出ppt既顏色同excess NAOH/NH3有D會redissolve
distinguish different compound catio ...
呢d野已經記到熟啦...
不過好多時係記個陣好易, 應用個陣難...
個次mock緊張到叫我分NH4CL同AGCL我都唔識:icon110:
做past paper稍為唔專心都可能諗唔到:o Originally posted by 2076 at 2005/3/30 10:28 PM:
勁人越補越勁我信, 但邊有可能渣人會越補越渣?
話時話, 我已經唔想再補佢, 一個月成450蚊,
又唔係幾學到野, 留番D錢畀我買套戲去睇仲好
有好多人同我講佢太多野
可以有好多野唔識 我上年乜都冇到就去考:icon110:
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