Sunday, August 7, 2011
Common Mistakes for SPM Chemistry Paper 2 Section C
1) Is it a compulsory to draw experimental diagram?
No. It is not compulsory to draw experimental diagram unless it is stated in the question.
i.e. “By using a suitable diagram, explain a laboratory experiment to determine …”
I would recommend that even the question not stated this statement, it is better for the students to draw the diagram because it will help you in remembering the important apparatus and material which is being used in the experiment. Besides that, you need to label (apparatus and material) the experimental diagram.
Sunday, February 13, 2011
Indicator
Acid solution: RED
Neutral solution: PURPLE
Alkali solution: BLUE
***
Indicator: Phenolphthalein
Acid solution: Colourless
Neutral solution: Colourless
Alkali solution: PINK
***
....Read more..... Best regards,
Friday, November 6, 2009
Thursday, October 29, 2009
Teknik Menjawab Soalan Kimia 1 (2009)
Terima Kasih Daun Keladi
Kalau Boleh, Tahun Hadapan Datang Lagi....
Teknik menjawab ini adalah sebahagian daripada program Kem Kecemerlangan Sains SMKA Baling 2009...
Teknik Menjawab Soalan Kimia 2 (2009)
Semua pelajar mengucapkan takziah atas semua ketentuan Allah S.W.T.
Sunday, October 25, 2009
KEM KECEMERLANGAN SAINS 2007
Kem Kecemerlangan Sains yang diadakan di Pulau Tali Kail, Tasik Temenggor, Banding, Perak Darul Ridzwan....
Read more.....
Ini adalah merupakan kem Kecemerlangan Sains kali yang ke dua
Friday, October 16, 2009
KEM KECEMERLANGAN SAINS
Saturday, September 26, 2009
Tuesday, August 4, 2009
Trial 2009 (Insya Allah kalau betul laaaa.... )
Blogger not responsible for any difficulty.....
baca lagi maklumat trial nih......
For Paper II
Structural Questions Section A (90 minutes)
1. Periodic Table – Analysis the elements in the table
2. Rate of Reaction – The concentration of sodium thiosulphate (graph)
3. Acid & Base – neutralization (strong & weak acid & alkali)
4. Haber / Contact process – equations – catalyst
5. Heat of Neutralization / Combustion – definitions, Q = mc / H = ? / energy level diagram
6. Soap / Detergent – structure of molecules / differences / cleansing Action / Additives
Essey Questions Section B (60 minutes)
7. Chemicals Bonding – Ionic / Covalent / structure of atom
8. Hydrocarbon / Alcohol / Esterification / Latex / Alkane vs Alkene
Essey Questions Section C (60 minutes)
9. Redox reaction – Chemical cell / U tube / rusting / empirical formulae
10. Salt (Preparing Insoluble / Soluble salt)
(Paper III)
1. Electrochemical Series / reactivity series
2. Strength of Alloy compared to Metal
Sunday, March 1, 2009
TEKNIK-TEKNIK MENJAWAB SOALAN STRUKTUR CHEMISTRY 2 SPM
• Jangan mengulangi ayat dalam soalan.
• Terus menulis jawapan yang dikehendaki.
Example :
Which of the following element can form base oxide?
Answer :
Wrong = From the following elements, the element that can form a base oxode is sodium / Natrium.
Correct = Sodium / Natrium. (Terus tulis nama unsur itu)
Exercise
1. Molten lead(II) bromide can conduct electricity, explain why?
________________________________________
B. Memberi jawapan mengikut kehendak soalan.
• Jangan memberi jawapan yang tidak berkaitan dengan kehendak soalan.
• Baca soalan dengan teliti dan gariskan/bulatkan maklumat yang penting.
Example :
Write a chemical formula for the product when magnesium react with oxygen
Answer :
Wrong = 2Mg + O2 -----------> 2MgO (equation)
Correct = MgO (the chemical formula for magnesium oxide)
Example :
What can you observe when calcium carbonate added into dilute sulphuric acid.
Answer :
Wrong = Carbon dioxide gas release (the gas name)
Correct = Gas bubble released
Correct = Effervesce happened.
Example :
Write an ionic equation for the reaction between dilute hydrochloric acid and sodium hydroxide solution
Answer :
Wrong = HCl + NaOH --------> NaCl + H2O
Correct = H+ + OH- --------> H2O
Exercise
1. State a chemicals property for the element in group one in Periodic Table of Elements
2. Write the number of charge for the magnesium ion
3. List all the ionic formula for the ions that consist in aqueous copper(II) sulphate.
4. In the electrolysis of aqueous sodium hydroxide, what is the product produce at anode?
________________________________________
C. Menggunakan istilah -istilah yang betul.
• Jangan menggunakan istilah-istilah yang salah.
• Harus menggunakan istilah yang betul.
Example :
Wrong (Correct)
1 The attraction force between molecules low/small/high (Weak/Strong)
2 Sodium has one electron valens (Sodium atom)
3 Argon atom has stable arrangement / complete electron arrangement / 8 stable electron.
(Stable electron arrangement /electron arrangement as noble gas / 8 electron at the outermost shell / the electron at the outermost shell are full)
4 The colour of the solution change from blue to clear. (Colourless / decolourise).
5 Ions in the electrolyte can move. (free / free moving).
6 The rate of reaction fast/slow. (High/low).
7 Copper moleculs. (Atoms)
8 Copper atoms attracted to cathode. (Ions)
TUNGGU SAMBUNGANNYA........
Indicator: Methyl Orange
Acid solution: PINK
Neutral solution: ORANGE
Alkali solution: YELLOW
***
Indicator: Bromothymol Blue
Acid solution: YELLOW
Neutral solution: GREEN
Alkali solution: BLUE
***
Indicator: Cresol Puple
Acid solution: YELLOW
Neutral solution: GREEN
Alkali solution: PURPLE