2007 HKAL/HKASL Chemistry Examination Pau Chiu Wah 19.3.2004.
Transcript of 2007 HKAL/HKASL Chemistry Examination Pau Chiu Wah 19.3.2004.
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2007 HKAL/HKASL Chemistry
Examination
Pau Chiu Wah
19.3.2004
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2008(?) Implementation of NSS curriculum
1992 Implementation of AS curriculum
1994 First ASL examination1995 First exam of last CE syllabus
1997 First exam of current AL syllabus
2002 Introduction of Comprehension Q. in AL exam
2005 First exam of new CE syllabus
2007 First exam of new AL/ASL syllabuses
2011(?) First exam of NSS curriculum, last AL/ASL exam
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2007 HKAL Chemistry Examination (finalised)
Written Examination (80%)
Paper 1 (3 hours)
Paper 2 (3 hours)
Practical Examination (20%)
Teacher Assessment Scheme
or
Practical Examination (3 hours) (private candidates only)
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Paper 1Section A (60%) - short questions +
comprehension questionsSection B (20%) - questions on practical
chemistrySection C (20%) - essay questions - 1 out of 2 questions
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Paper 2Section A (60%)
- structured questions on topics 1 to 10
- 3 out of 4 questions
Section B (40%)
- structured questions on topics 11 to 13
- 2 out of 3 questions
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2007 HKASL Chemistry Examination
Written Examination (80%)
Paper 1 (1½ hours)
Paper 2 (1½ hours)
Practical Examination (20%)
Teacher Assessment Scheme
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Paper 1 Section A (40% of Written Exam) - short questions - comprehension questions - practical chemistry - compulsory questions Section B (10% of Written Exam) - essay questions - 1 out of 2 questions
Paper 2 - structured questions (50% of
Written Exam) - 3 out of 4 questions
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A Level AS Level
Paper 1
8:30 am
to
11:30 am
Paper 1
8:30 am to 10:00 am
Paper 2
1:30 pm
to
4:30 pm
Paper 2
1:30 pm to 3:00 pm
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Sample Question Papers for AL and ASL Examinations
(will be circulated in June 2005)
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Features of the Sample Papers
Standard reduction potentials will be provided (AL papers)
Most questions are extracted/modified from exam papers of previous years
A table highlighting the questions on the new topics will be provided
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Paper 1 Q.3 (b) Drug development (Topic 13.2)
Q.6 (a) Synthetic polymers (Topic 13.1)
Q.10 Electrophilic substitution (Topic 12.3)
Paper 2 Q.1 (c) Solubility product and Nernst equation (Topics 6.2 and 6.3)
Q.2 (b) Buckminsterfullerene and Group IV elements (Topics 4.6 and 9.2)
Q.2 (d)(i)
Spontaneity of changes (topic 3.4)
Q.7 (c) Green chemistry (Topic 13.3)
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Some sample questions
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Paper 2 Q.2 (d)
Account for each of the following:
(i) NH4Cl(s) dissolves in water spontaneously even though the process is exothermic.
(ii) Although the reaction of H2(g) with O2(g) is a highly exothermic process, it does not readily at room temperaure.
(4 marks)
Question on spontaneity of Reactions
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A question on drugs
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NH
N
S
O
CH3
CH3
HO2CCH(CH2)3C
O
NH2
CO2H
A question on drugs
(i) Identify the chiral carbon atoms.
(ii) Which of the two amide linkages is more susceptible to acidic hydrolysis?
(iii)Why is the drug not taken together with fruit juices?
a penicillin
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AL ASLNo. of expts.
requiredS6 >=15
S7 >= 8
>=13
( 2 years)
No. of assessment
marks
4A 4B 2C
(2 years)
7
(2 years)
Min. no. of assessments
S6: 2A 2B 1C
S7: 1A 1B 1C
Repeaters:
3A 3B 1C
First timers
and repeaters:2A 2B 1C
No. of full reports
First timer >=4
Repeater >=2
First timer >=3
Repeater >=2
Teachers Assessment Scheme
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