1 comments: illuminate-x said…
THANK YOU SO MUCH for the tip for the weak/strong acid question! It came out for Chem Paper 2 today and I was so relieved I saw the post just yesterday. October 24, 2007 3:37 AM

WOW!

Question from a Top School 2007 O Level Chemistry Prelim Paper:

Question:

Astatine is a Group VII element below Iodine in Periodic Table. Which of the following statements concerning Astatine is correct?

A) It is a liquid at room temp and pressure.
B) It is a stronger oxidizing agent than iodine
C) It reacts with sodium ti form an ionic compound
D) Its diatomic molecules are held together by weak covalent bonds

Should be a mangeable question. Enjoy doing!

PS: Leave your suggested answers in the “Comments” section below.

Rgds
Sean
SimpleChemConcepts
Learning Experience with A Difference

Hey students,

Try this O Level Chemistry questions on Bonding and Organic Chemistry.

Question:
The number of shared pairs electrons in a molecule of methanol is:
A) 3
B) 4
C) 5
D) 6

Show me your reasoning. You can leave your suggested answers in the “Comments” section below.

Rgds,
Sean
SimpleChemConcepts

Qn answered and explained under comments

How about another O Level Chemistry Question on Redox Reactions as a food for thoughts over the weekend…

Question:

Which of the following conversions is a redox reaction (involves oxidation/reduction)?

A)H+ => H20
B)NO2 => NO3^-
C)SO2 => SO3^2-
D)SO3 => SO4^2-

Enjoy and take care.

Rgds,
Sean, Master Trainer @
SimpleChemConcept