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NSS CHEMISTRY & COMBINED SCIENCE (CHEMISTRY PART) PUBLIC ASSESSMENT

This public assessment is designed to assess students' knowledge and understanding of chemistry topics through multiple choice questions, structured questions, essays, and practical tasks.

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NSS CHEMISTRY & COMBINED SCIENCE (CHEMISTRY PART) PUBLIC ASSESSMENT

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

  2. NSS CHEMISTRY PUBLIC ASSESSMENT Papers Sections Parts Topics examined Questions Questions Sections Papers Paper 1 (2.5 hours) Section A (18%) Part I Topics 1-8 24 M.C. 24 M.C. Section A (12%) One paper only (100 mins) Part II Topics 1-12* 12 M.C. Section B (42%) Part I Topics 1-8 structured questions (47 marks) essay (9 marks) structured questions (47 marks) essay (9 marks) Section B (28%) Part II Topics 1-12* structured questions (28 marks) Paper 2 (1 hour) 20% Topics 13-15# structured questions 20 marks per elective (40 marks) SBA 20% 10% SBA Total 100% 50% Total Chemistry CombinedScience (Chemistry Part) SBA * Emphasis would be put on Topics 9-12 # May include contents of Topics 1-12

  3. Papers Sections Parts Topics examined Questions Paper 1 (2.5 hours) Section A (18%) Part I Topics 1-8 24 M.C. Part II Topics 1-12* 12 M.C. Section B (42%) Part I Topics 1-8 structured questions (47 marks) essay (9 marks) Part II Topics 1-12* structured questions (28 marks) Paper 2 (1 hour) 20% Topics 13-15# structured questions 20 marks per elective (40 marks) SBA 20% Total 100% Chemistry Public Assessment * Emphasis would be put on Topics 9-12 # May include contents of Topics 1-12

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

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

  6. 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 0 mins Means of assessment (teacher’s work) Mark worksheet Mark worksheet Percentage in SBA 10% 10% Authentication • Individual work • Hand in worksheets in class time Basic Chemical Analysis SBA

  7. Task content (student’s work)  • 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. In-class time 80 mins Out-of-school time 0 – 60 mins Means of assessment (teacher’s work) Mark worksheet / simple report / detailed report / quiz Percentage in SBA 30% Authentication • 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 Experiment SBA

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

  9. 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) Mark assignments Percentage in SBA 20% Authentication • 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 Assignment SBA

  10. Number of assessments on SBA tasks BCA EXPT IS ASSN S6 1 3 1 1 S5 S4 SBA requirements (BCA, EXPT, IS and ASSN should spread out evenly across S5 and S6)

  11. Number of Experiments (including BCA & EXPT, but excluding IS) S6 11 S5 S4 8 SBA requirements

  12. SBA REQUIREMENTS Number of assessments on SBA tasks Number of Experiments (including VA & EXPT) VA EXPT ASSN % in SBA 30% 40% 30% S6 1 2 1 7 S5 S4 4 NSS Combined Science (Chemistry Part) School –based Assessment (VA, EXPT and ASSN should spread out evenly across S5 and S6)

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