NSS CHEMISTRY COMBINED SCIENCE CHEMISTRY PART PUBLIC ASSESSMENT

NSS CHEMISTRY & COMBINED SCIENCE (CHEMISTRY PART) PUBLIC ASSESSMENT Dr. Li Tak Manager- Assessment Development Hong Kong Examinations and Assessment Authority

NSS CHEMISTRY PUBLIC ASSESSMENT Chemistry Papers Paper 1 (2. 5 hours) Combined Science (Chemistry Part) Sections Parts Topics examined Questions Section A (18%) Part I Topics 1 -8 24 M. C. Part II Topics 1 -12* 12 M. C. Topics 1 -8 structured questions (47 marks) essay (9 marks) Section B (42%) Part II Topics 1 -12* structured questions (28 marks) Topics 13 -15# structured questions 20 marks per elective (40 marks) structured questions (47 marks) essay (9 marks) Sections Papers Section A (12%) One paper only (100 mins) Section B (28%) Paper 2 (1 hour) 20% SBA 20% 10% SBA Total 100% 50% Total * Emphasis would be put on Topics 9 -12 # May include contents of Topics 1 -12 SBA

Chemistry Papers Paper 1 (2. 5 hours) Sections Parts Topics examined Questions Section A (18%) Part I Topics 1 -8 24 M. C. Part II Topics 1 -12* 12 M. C. Part I Topics 1 -8 structured questions (47 marks) essay (9 marks) Part II Topics 1 -12* structured questions (28 marks) Topics 13 -15# structured questions 20 marks per elective (40 marks) Section B (42%) Paper 2 (1 hour) 20% SBA 20% Total 100% * Emphasis would be put on Topics 9 -12 # May include contents of Topics 1 -12 Public Assessment

Combined Science (Chemistry Part) Questions Sections 24 M. C. Section A (12%) structured questions (47 marks) essay (9 marks) Section B (28%) Papers One paper only (100 mins) 10% SBA 50% Total Public Assessment

NSS Chemistry School-based Assessment SBA TASKS Weighting 20% of Public Assessment Mode Task type Task code Non-practical Related Practical Related Basic Chemical Analysis Experiment Investigative Study Assignment BCA EXPT IS ASSN SBA Requirements

Basic Chemical Analysis Task content (student’s work) • Volumetric Analysis • Worksheet • Detection for cations or anions or both • Worksheet In-class time 80 mins 20 mins Out-of-school time 0 mins Mark worksheet 10% Means of assessment (teacher’s work) Percentage in SBA Authentication • Individual work • Hand in worksheets in class time SBA

Experiment Task content (student’s work) In-class time Out-of-school time Means of assessment (teacher’s work) Percentage in SBA Authentication • Perform experiments suggested in the C & A Guide (other than VA & QA) • Worksheet / simple report / detailed report on experiments performed; AND/OR Quiz on experimental procedures, data manipulation, results interpretation, safety measures, etc. 80 mins 0 – 60 mins Mark worksheet / simple report / detailed report / quiz 30% • Allow group work but individual students should hand in worksheet / simple report / raw data sheet (if detailed report to be finished at home) in class time AND/OR • quiz SBA

Investigative Study Task content (student’s work) Design Process In-class time 20 hours Out-of-school time 2 hours Means of assessment (teacher’s work) Percentage in SBA Authentication Report • Mark proposal • Assess lab/process skills • Mark written/oral reports, etc. 10% 10% • Allow group work & group reporting • Individual students to be questioned by teacher in class time SBA

Assignment Task content (student’s work) Examples: • Design a poster • Develop a multimedia artifact • Write a report after visiting industrial plant • Read materials and write a review In-class time 1 hour Out-of-school time 3 hours Means of assessment (teacher’s work) Percentage in SBA Authentication Mark assignments 20% • Individual work • Preparation performed at home • Main part to be finished in class time • May ask students some related questions or even require them to make very short presentation, if needed SBA

SBA requirements Number of assessments on SBA tasks S 6 S 5 BCA EXPT IS ASSN 1 3 1 1 S 4 (BCA, EXPT, IS and ASSN should spread out evenly across S 5 and S 6)

SBA requirements Number of Experiments (including BCA & EXPT, but excluding IS) S 6 S 5 S 4 11 8

NSS Combined Science (Chemistry Part) School –based Assessment SBA REQUIREMENTS Number of assessments on SBA tasks VA % in SBA S 6 S 5 S 4 EXPT ASSN 30% 40% 30% 1 2 1 Number of Experiments (including VA & EXPT) 7 4 (VA, EXPT and ASSN should spread out evenly across S 5 and S 6)