CE chem

tsubasa

我想問你地點溫chem架?
d equation又多, reaction又多, properties仲多
背晒佢?
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)

pancake

我用中文
不過我知類似有red cat,an ox
oil rig 呢D

tsubasa

Originally posted by pancake at 2005-3-30 01:47 AM:
我用中文
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
咩係oil rig?

Raul

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
咩係oil rig?

OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON

2076

Originally posted by Raul at 2005-3-30 10:47 AM:

OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON

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

[ Last edited by 2076 on 30-3-2005 at 01:44 PM ]

kawai

Originally posted by Raul at 2005-3-30 10:47 AM:

OXIDATING AGENT IS LOSE ELECTRON
REDUCING AGENT IS GAIN ELECTRON

唔好玩啦
OA點會放電子呀

Raul

Originally posted by kawai at 2005-3-30 17:28:

唔好玩啦
OA點會放電子呀

我乜都唔知

kawai

Originally posted by Raul at 2005-3-30 05:33 PM:

我乜都唔知

你會唔知

Andy Chen

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

tsubasa

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

ps. 有冇人補k kwong?

2076

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

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

tsubasa

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
但上年有補佢既人都係比其他人拎多一分咁大把

vctwl

Oil fraction - By K.K. (我不知道那個補習老師講粗口)
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

vctwl

K. Kwong 係一個勁人會越補越勁, 渣人會越補越渣的老師

2076

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

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

2076

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...

tsubasa

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)
你個PK GirlFriend 好 Low B

你(普通話:ni) - naphtha
P - petrol
K - Kerpsene
G - Gas Oil ...

好好記

tsubasa

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
做past paper稍為唔專心都可能諗唔到

vctwl

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

CYBASTER

我上年乜都冇到就去考