8 october 10 - i no caaayre tomorrow duh last day

haha tw is the last day of CT !! WOOHOO BANZAI (forget about chinese , well idc :P)
dont forget ur physics or mr.Rufruf ( gimme a goosebumps) will make u comb his moustache :p
soo here it goes. tw is the last day of our verryyy long and stressful weekdays so we gonna end it with a lil crazy here n there. now im even more confuse about what im tryin to say in exact :s so u guys know when is the deadline right? 200.000 ;D
pay meh u knw who i am lol geddit? btw clean duh class tom and help me post some pics at duh back ! we r not HOBOS peoplee !! haha

xoxo,
ur random admin

3 October 2010 - and that's how SUE sees it #11

yo whaddup faag bruahahhahah XD don't kill me! :D hmm,, when was the last time moah posted anything? 3 months agoo.... =.= my apologies gee! i forgot to do it cus umm this blog is not exist i have been studying REALLY hard. brauhahahahha just gonna post some CARS (Crazy Asian Random Shit) here. okay no im gonna be killed if i do that. soo just gonna post on all the happenings around school.

1.) There's gonna be a photography contest in the Photography Club (heart it :D)
2.) There's a band competition in uph
3.) There's a dance competition in st.nicholas
4.) There's a crazy random asian girl writing this stuff

waiiit a minute. ahhahahha I'M BORED SO I'M GONNA GO WATCH HOW I MET YOUR MOTHER (insert how i met your mother theme song) BA-BA-BA-BAAP BA-BA-BA-BA-BA-BA-BA-BARAARARAAA

laters, gee! :D

1 octo 2010 - common test

i know it have been ages since i last post. the matter is that no one reads so no one really cares. so here it goes. the notes for chemistry.

What is an activity series, and how is it used?

An activity series is a list of substances ranked in order of relative reactivity. For example, magnesium metal can knock hydrogen ions out of solution, so it is considered more reactive than elemental hydrogen:

Mg(s) + 2 H⁺(aq) H₂(g) + Mg²⁺(aq)

Zinc can also displace hydrogen ions from solution:

Zn(s) + 2 H⁺(aq) H₂(g) + Zn²⁺(aq)

so zinc is also more active than hydrogen. But magnesium metal can remove zinc ions from solution:

Mg(s) + Zn²⁺(aq) Zn(s) + Mg²⁺(aq)

The reaction goes nearly to completion [Note 1]. Magnesium is more active than zinc, and the activity series including these elements would be Mg > Zn > H. The following activity series built up in a similar way. The most active metals are at the top of the table; the least active are at the bottom. Each metal is able to displace the elements below it from solution (or, using the language of electrochemistry, each metal can reduce the cations of metals below it to their elemental forms).

The metal activity series. Most active (most strongly reducing) metals appear on top, and least active metals appear on the bottom.

displace H2 from water, steam, or acids	Li	2 Li(s) + 2 H2O() 2 LiOH(aq) + H2(g)
	K	2 K(s) + 2 H2O() 2 KOH(aq) + H2(g)
	Ca	Ca(s) + 2 H2O() Ca(OH)2(s) + H2(g)
	Na	2 Na(s) + 2 H2O() 2 NaOH(aq) + H2(g)
displace H2 from steam or acids	Mg	Mg(s) + 2 H2O(g) Mg(OH)2(s) + H2(g)
	Al	2 Al(s) + 6 H2O(g) 2 Al(OH)3(s) + 3 H2(g)
	Mn	Mn(s) + 2 H2O(g) Mn(OH)2(s) + H2(g)
	Zn	Zn(s) + 2 H2O(g) Zn(OH)2(s) + H2(g)
	Fe	Fe(s) + 2 H2O(g) Fe(OH)2(s) + H2(g)
displace H2 from acids only	Ni	Ni(s) + 2 H+(aq) Ni2+(aq) + H2(g)
	Sn	Sn(s) + 2 H+(aq) Sn2+(aq) + H2(g)
	Pb	Pb(s) + 2 H+(aq) Pb2+(aq) + H2(g)
	H2
can't displace H2	Cu
	Ag
	Pt
	Au

The activity series is a useful guide for predicting the products of metal displacement reactions. For example, placing a strip of zinc metal in a copper(II) sulfate solution will produce metallic copper and zinc sulfate, since zinc is above copper on the series. A strip of copper placed into a zinc sulfate solution will not produce an appreciable reaction, because copper is below zinc on the series and can't displace zinc ions from solution. The series works well as long as the reactions being predicted occur at room temperature and in aqueous solution. It isn't difficult to find reactions that are at odds with the metal and nonmetal activity series under other conditions. There are other complications too. For example, aluminum would be expected to displace hydrogen from steam, but in fact it won't unless the aluminum oxide film on its surface is scrubbed off. Copper can't displace hydrogen from acids, but it does react with acids like nitric and sulfuric because they can act as oxidizing agents. It might be expected that metals with lower ionization energies and lower electronegativities would be more active, since they would be expected to more easily lose electrons in a displacement reaction. But while ionization energy and electronegativity do affect a metal's ranking in the series, other factors have a strong and complex influence on relative activity [Note 2], obscuring the relationship. Activity series can be devised for nonmetals as well. Since nonmetallic elements tend to accept electrons in redox reactions, the nonmetal activity series is arranged so that the most powerful oxidizing agents are considered most active (whereas in the metal series, the most powerful reducing agents are the most active):

The nonmetal activity series. Most active (most strongly oxidizing) nonmetals appear on top, and least active nonmetals appear on the bottom.

F2	strongest oxidizing agent
Cl2
O2
Br2
I2
S
red P	weakest oxidizing agent

For example, the series predicts that Cl₂ will displace Br^- and I^- from solution, because Cl₂ appears above Br₂ and I₂:

Cl₂(g) + 2 Br^-(aq) 2 Cl^-(aq) + Br₂() Cl₂(g) + 2 I^-(aq) 2 Cl^-(aq) + I₂(s) Br₂() + 2 Cl^-(aq) no reaction I₂(s) + 2 Cl^-(aq) no reaction

Notes

1. The reverse reaction does occur- a very tiny amount of zinc placed in a solution of magnesium ions will dissolve. The reaction is actually an equilibrium, but it lies far to the right. Back
2. Ionization energies and electronegativies are derived for the gas phase- while the activity series applies to solutions, under standard conditions. Enthalpies of hydration and sublimation for the metal also must be considered in rationalizing its place in the activity series. For a more detailed discussion of these points, see Dr. R. Peters' AUFBAU1 notes. Also, a metal's rank on the activity series is determined by the free energy change it undergoes when it transfers electrons in a redox reaction. The free energy change includes contributions from the entropy change associated with the process as well as from the energy required or released. Even when the ionization energies, sublimation energies, and hydration energies of two metals are very similar, the entropy contribution can make their activities quite different. Back

Resources

The Fall of the Electron (Stephen Lower, Simon Fraser U.)

The activity series is a very helpful tool for explaining and predicting the direction of redox reactions. The series ranks metals by "oxidation potential". Top-ranked metals displace the ions of metals lower in the series from solution. A free-energy based series is used in this tutorial to show how and why active metals displace less active ones from solution. http://www.sfu.ca/chemcai/AQCHEM/FallElect.html (01/19/99)

24 AUGUST 2010 - learning something new EVERYDAY

 

 

thats all from the admins today. :D remembr to do ur emaths hw pass them by 6.30 to mr randy. and chem's hw . btw SOCIO's quiz is tomorrow. prepare  !!

HUGS AND KISSES <3 admin

22 AUGUST 2010 - recent updates

honestly speaking? im kinda lazy posting stuffs here. its like this thing never exist. totally agree with asor on the last post. i think no one even read anything we posted. well except for some, and i really appreciate that.

okay, moving on..
there's 5 new students in our class transferred from BBS semarang and bandung ! yay ! hahaha too bad for the boys, none of them are girls :p

and agaiinn, victory for the BBS team A n B for the basketball match!! hiphiphorray!
speaking of basketball we totally PWNED the ketapang guys. they totally deserve it tho (my P.OV) making it clear , WE R NOT BRIBING THE REFEREE . pfft there you go... 28-27


this week's birthday !! VICKA INEZ KARLAN !!
congrats :D May God Bless you dear .. Have a blast and sorry just post this thing up :)

so who have done with their socio's hw??
and btw, DONT FORGET to use ur watch tomorrow or u'll get a big tight slap from Mr.You-know-who. :D

good day!
:* admins

20100820 Excelso Cup!

Hey 4Zealers! :) Recently the mods are not updating LOL so let's have me post instead! :B
Anyways I suppose you guys now that recently we have this annual Excelso Cup going on right?
Did you guys watched the match this evening? We shouted at full pitch to support 'our classmates' in BBSPIK B, who was against Ketapang 1. Really, never thought that we could shout that loud. It was 'beda tipis' with 28 for BBSPIK B and 27 for Ketapang 1. It was a really heart throbbing one (even though I didn't watch the 'scene' where they got the winning score, DUH.)

MODS: I hope we can update daily about Excelso Cup since our folks who don't have time to watch can be updated with the 'who won and who lost' thang. :)

Post edit tomorrow with pictures, kaay! (Even though I could hardly believe that any of you 4Zealers really read our post here. LOL)

REMINDER: No A-math extra class tomorrow, Chemistry 10-11:30

Cheers yeah

9 August 2010 - HIHIHIHI yup HALLOWEEN PARTY "booo~"

BOO ! yup halloween is near and we , the sec 4 zeal event organizers (lol) , had made a plan for having a halloween party. well who dont like party? not me. so this is the deal. u read this, (i will distribute this by tomorrow) , and u think about it. And for the guys, too bad U MUST USE COSTUME. well, u must follow the rules . B)

Halloween Party - Registration Form


           For those who are interested in joining the 4 zeal's
Halloween party on the 30th of October 2010. (Saturday)
Please Inform the one in-charge (Evelyn, Etania, Rosa)
as soon as possible, to register as we need to estimate
the budget for this event.

For more information :
Http://zeal-licious.blogspot.com

           To ask for more question please do not hesitate to
leave it in the zeal chat box on the right hand side of the blog
and we will reply u ASAP. we will explain the details after
the registration time is over. Students from the other classes
are welcomed to join but they need to pay the entrance fee.
Note that wearing a costume is compulsory and you must submit
this form by next monday (16th August 2010). Registration
date will end latest on 17th of August 2010 - Tuesday .
Thank you.

xoxo ,


Organizers :)

------------------------------cut-here-----------------------------------------------------

Name : _________________                     
Costume : _______________
Class : _________________
Date : __________________


The registration fee is paid on : _________

          
_____________              ______________
organizers sign           participant sign

-----------------------------------------------------------------------------------------------

end of the form.

btw this is some typical qs u will definitely ask. so i will ans first before all of u start asking the same qs over and over and over again. 

1st qs : " where is the location? "

ans : " depends , if we have lots of people joining and if we have enough budget we will rent a place , but if we dont we will have a small party down at asor 's uncle's abandoned house (to make it sound creepy lol) . but no worries  we will decorate it :)"

2nd qs : " how much is the fee?"

ans : " ha ! thats a tough one. we need to know how many people is joining then we will tell u the fee. "

3rd qs : " i have another qs to ask "

ans : "comment it below this post or simply post ur qs on the chat box on the right hand side of the blog. do not forget to put ur name :) it matters " 

Ps:
This will probably help u with the costume/ make up
( click here )

BOO,
admins