Friday, October 14, 2011

Skema PAT T4 2011

Skema PAT T4 2011

Tuesday, October 11, 2011

TIPS UTK AKHIR TAHUN

1) AMMONIA, GLASS AND CERAMICS
2) ELEMENT IN A PERIOD
3) VOLTAIC CELL
4) SALT
5) EMPIRICAL FORMULA OF MAGNESIUM OXIDE, COPPER OXIDE
6) REACTIVITY OF GROUP 1
7) NAPHTALEIN
8) CONSTRUCT AN ELECTROCHEMICAL SERIES

GOOD LUCK...CHEMISTRY IS FUN

Monday, May 30, 2011

Selamat bercuti semua

Kepada pelajar2 Tingkatan 5ST2 jangan lupa kelas tambahan 1.6.2011.

Kelas tersebut akan bermula jam 8.00 pagi hingga 10.00 pagi.

Sila bawa Answer To Score dan Teknik menjawab soalan akan diadakan.

Thursday, May 5, 2011

TIPS EXAM PERTENGAHAN TAHUN 2011

OBJEKTIF : SEMUA TOPIK 2-5
STRUCTURE : CHAPTER 2 (DIFFUSION, ELECTRON ARRRANGEMENT)
CHAPTER 3 (EMPIRICAL FORMULA, MOLECULAR FORMULA, FLOWER OF MOL,CHEMICAL FORMULA)
CHAPTER 4 (GROUP 1, PERIOD 3,
CHAPTER 5 (TYPE OF BOND,MOLTEN, SOLID, AQUEOUS, DRAW AN ELECTRON ARRANGEMENT)
ESSAY : CHAPTER 4 GROUP 1 AND 17,
CHAPTER 2 AND 5 ISOTOPE AND BOND

SCIENTIFIC SKILL : CHAPTER 4 (REACTIVITY OF THE GROUP)

Saturday, April 2, 2011

Chapter 2 Form 4 Science

SPM Science Notes - Body Coordination

sumber dipetik dr scrib

Monday, March 14, 2011

JAWAPAN PENILAIAN KURIKULUM 2011

Kimia

Form 5
Objective
1 A 2 B 3 A 4 C 5 B 6 B 7 A 8 C 9 A 10 B
11 C 12 B 13 C 14 C 15 C 16 C 17 D 18 A 19 A 20 B


1
(a)

 
Complete set of apparatus and can be used and label
 

 
 

 2



(b)

Zn + H2SO4 → ZnSO4 + H2
1


(c)

Experiment I =   0.167 cm3 s-1

Experiment II =  0.267 cm3 s-1
1

1



(d)

Number of moles of H2SO4 = 0.002 mol
1 mol of H2SO4 produce 1 mol of H2
0.002 mol of H2SO4 produce 0.002 mol of H2
Maximum volume of H2 = 0.002 x 24 000 = 48 cm3


1

 
1


(e)

·         The rate of reaction in experiment II is higher than that of experiment I.
·         Copper(II) sulphate solution lowers the activation energy of the reaction in experiment II.
·         The frequency of effective collisions between hydrogen ions and zinc atoms increases in experiment II.

1


1
 
1



3 (a)

1.      Oxidation - increase in oxidation number
2.      Reduction – decrease in oxidation number

1
1

(b)(i)

1.      Fe+2    Fe+3  +  e
2.      Br2  +  2e    2Br –
3.      Iron(II) ions lose electrons to become iron(III) ions. Iron(II) ions are oxidised
4.      Bromine molecules gain electrons to form bromide ions. Bromine molecules are reduced
(a: any suitable reducing agent)

1.      Fe+3  +  e    Fe+2 
2.      Zn    Zn+2  +  2e
3.      Iron(III) ions gain electrons to become iron(II) ions. Iron(III) ions are reduced
4.      Zinc atoms lose electrons to form zinc ions. Zinc atoms are oxidised
(a: any suitable reducing agent)


1
1
1

1



1
1
1

1




























































Friday, February 18, 2011

My Isotopes

What is isotopes????



Ramai pelajar yang selalu memberikan jawapan yang tidak tepat tentang isotope. contohnya seperti berikut :

i)     Isotope have same proton number but different nucleon number 
       ( mempunyai nombor proton yang sama tetapi nombor nukleon yang berbeza )
ii)    Isotope have same proton number but different number of neutron
       ( mempunyai nombor proton yang sama tetapi nombor neutron yang berbeza )

Kenapa jawapan di atas tidak tepat ???? Macam dah betul tapi kenapa tak dapat markah.....

Kata kunci paling penting adalah ATOM...Kerana satu perkataan markah hilang.  Tersangatlah rugi.
So be careful. Inilah jawapan yang tepat...

Isotopes are atoms that have the same number of protons but different number of neutrons
or
atoms that have the same proton number but different nucleon number.

The Difference Between a Good Teacher and an Average One

The Difference Between a Good Teacher and an Average One

Sunday, January 16, 2011

SCORE A+ SPM 2011


GUIDELINES ON ANSWERING QUESTIONS IN CHEMISTRY PAPER 2

GUIDELINES ON ANSWERING STRUCTURED QUESTION

1.  General
(a)    As with other subjects, you should read all questions carefully and circle all important key words.
(b)   Answers can be short but they must be precise and complete.
(c)    The space provided for your answer gives an indication as to ‘how long’ the answer should be.
(d)   Always look at the marks allotted for each question as a guide to how many points you should give. 

2.  Answers must be PRECISE.
  * Need not write in complete sentence but your answer must be PRECISE.
     Example:
     State the conversion of energy that occurs during the electrolysis.
     Answer:
    The energy conversion that occurs during electrolysis is from electrical energy to chemical energy.
     From electrical energy to chemical energy.
    X To chemical energy. [Answer incomplete. 0 mark!]

Measure the properties of gases

http://www.5min.com/Video/How-to-Measure-the-Properties-of-Gases-438659799

Atomic Number

solid liquid and gas

Thursday, January 13, 2011

JADUAL BERKALA UNSUR

JIRIM (Matter)






JIRIM BOLEH BERUBAH (MATTER)
Mood kita juga sering berubah mengikut keadaan kita pada satu-satu masa.Mengapa ia terjadi? Apa kaitan mood dan jirim?

Berdasarkan Teori Kinetik Jirim, jirim ini sebenarnya boleh berubah-ubah. Jirim adalah bahan yang mempunyai jisim dan memenuhi ruang.Ianya terdiri daripada zarah-zarah halus yang diskrit.Maknanya, zarah ini tidak boleh dilihat dengan mata kasar...


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