IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => IGCSE/ GCSE => Reference Material => Topic started by: 6394 on May 31, 2010, 10:17:36 am

Title: Hope i helpd =D
Post by: 6394 on May 31, 2010, 10:17:36 am: dunno whethr u already have dese or nt
bt i found it helpful
so thot of sharin
hope i helped
:P
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 10:26:18 am: her is another 1....
:P
Title: Re: Hope i helpd =D
Post by: SGVaibhav on May 31, 2010, 10:31:06 am: keep it up =)
nice work!
Title: Re: Hope i helpd =D
Post by: princess12 on May 31, 2010, 10:31:55 am: thanks for posting it is a good information
if u have a notes of organic chemistry can u post it
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 10:54:19 am: my pleasure
:P
Title: Re: Hope i helpd =D
Post by: BlackBunny103 on May 31, 2010, 11:50:13 am: Thanxx +rep ;)
Keep it up :D
Title: Re: Hope i helpd =D
Post by: john_is cool** on May 31, 2010, 12:22:47 pm: thank you! :)

+rep
Title: Re: Hope i helpd =D
Post by: Dibss on May 31, 2010, 12:36:10 pm: Thanks javvvvvs :D

i have a few power points on salts and exo/endo reactions attached... hope they help too :)
GOOD LUCK FOR CHEM GUYS!
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 01:08:14 pm: ppl hoe hve difficulty in remembering whethr anode is + or -
or whethr cathode is + or -

remember PANCake
Positive Anode
Negative Cathode
i will share some more tips n tricks soon
IA
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 01:13:49 pm: k 1 more
for electroplatin
cathode is always the obj
<rem:C-->cathode
C-->cup(cup is an obj. u see :P)>
weird ways bt this is hw i rem som thingz :D

n Thanks a lot dibzy 4 sharin dese
:)
Title: Re: Hope i helpd =D
Post by: Dibss on May 31, 2010, 01:23:54 pm: haha i have really weird ways of remembering too ;D

CROLEG (pictures a crow's leg) --> cathode, reduction, oxygen lost, electrons gained

AOOGEL (pictures a howling wolf using gel)--> anode, oxidation, oxygen gained, electrons lost :P
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 01:33:23 pm: anothr 1 :P
OIL RIG-->for electrons
OIL:oxidation is losing
RIG:reduction is gaining

ppl if u have ny tricks plz share
post em here
Thanks
:DD
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 01:39:36 pm: CGAL(cya girl):cathode gain
anode lose
:P
Title: Re: Hope i helpd =D
Post by: J.Darren on May 31, 2010, 02:56:38 pm: Alkene + Steam = Alcohol (Needs Phosporic acid as catalyst, high temp,pressure!)

300 degree celsius and 60 atm, you need to know it for the IGCSE examination :D
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 02:56:54 pm: 1 more-->
isotopes=SANDMaN
Same Atomic No.
Different Mass No.
<m nt sure abt this ny 1 jus tell whethr the def is ryt ???>
Title: Re: Hope i helpd =D
Post by: Ivo on May 31, 2010, 03:04:28 pm: Quote from: Jaw@!r!a on May 31, 2010, 02:56:54 pm
1 more-->
isotopes=SANDMaN
Same Atomic No.
Different Mass No.
<m nt sure abt this ny 1 jus tell whethr the def is ryt ???>

Yes that's right, isotopes have the same proton number but different numbers of neutrons.
Title: Re: Hope i helpd =D
Post by: Vin on May 31, 2010, 10:17:29 pm: lol I'll be having a bad time remembering how to remember stuff :P
one more of oxidation and reduction :P
LOGR :: Loss of electrons is Oxidation, gain of electrons is reduction

I have a couple of presentations here... useless in comparison with your notes though :\
Title: Re: Hope i helpd =D
Post by: Vin on May 31, 2010, 10:21:47 pm: hooked up some more .. ;D
Title: Re: Hope i helpd =D
Post by: 6394 on May 31, 2010, 10:30:42 pm: Thanks
vin
dats really sw8 of u
:P
Title: Re: Hope i helpd =D
Post by: Helium on June 03, 2010, 04:06:25 pm: Thanks ;D Vin and Jaw@!r!a

Was very usefull
Title: Re: Hope i helpd =D
Post by: 6394 on June 03, 2010, 10:55:42 pm: afwan ya mr .inert
:P
missin de fun
:P
Title: Re: Hope i helpd =D
Post by: Vin on June 04, 2010, 08:33:04 am: Okay here one more, this is a chemistry edexcel moles workbook
should be useful for practice
Title: Re: Hope i helpd =D
Post by: 6394 on June 04, 2010, 09:22:48 am: Quote from: ~VIN1094~ on June 04, 2010, 08:33:04 am
Okay here one more, this is a chemistry edexcel moles workbook
should be useful for practice

Thanks bro
:)
Title: Re: Hope i helpd =D
Post by: J.Darren on June 04, 2010, 11:48:53 am: Quote from: ~VIN1094~ on May 31, 2010, 10:17:29 pm
lol I'll be having a bad time remembering how to remember stuff :P
one more of oxidation and reduction :P
LOGR :: Loss of electrons is Oxidation, gain of electrons is reduction

I have a couple of presentations here... useless in comparison with your notes though :\

Oxidation - Increase in oxidation number and gain of oxygen
Reduction - Decrease in oxidation number and loss of oxygen