2007 HKAL/HKASL Chemistry Examination Pau Chiu Wah

2008(?) Implementation of NSS curriculum 1992 Implementation of AS curriculum 1994 First ASL examination 1995 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

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)

Paper 1  Section A (60%) - short questions + comprehension questions  Section B (20%) - questions on practical chemistry  Section C (20%) - essay questions - 1 out of 2 questions

Paper 2  Section A (60%) - structured questions on topics 1 to out of 4 questions  Section B (40%) - structured questions on topics 11 to out of 3 questions

2007 HKASL Chemistry Examination  Written Examination (80%) Paper 1 (1 ½ hours) Paper 2 (1 ½ hours)  Practical Examination (20%) Teacher Assessment Scheme

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

A LevelAS 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

Sample Question Papers for AL and ASL Examinations (will be circulated in June 2005)

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

Paper 1Q.3 (b)Drug development (Topic 13.2) Q.6 (a)Synthetic polymers (Topic 13.1) Q.10Electrophilic substitution (Topic 12.3) Paper 2Q.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)

Some sample questions

Paper 2 Q.2 (d) Account for each of the following: (i)NH 4 Cl(s) dissolves in water spontaneously even though the process is exothermic. (ii)Although the reaction of H 2 (g) with O 2 (g) is a highly exothermic process, it does not readily at room temperaure. (4 marks) Question on spontaneity of Reactions

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

ALASL No. of expts. required S6 >=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