NSS

CHEMISTRY&

COMBINED SCIENCE (CHEMISTRY PART)

PUBLIC ASSESSMENT

Dr. Li Tak ManManager- Assessment Development

Hong Kong Examinations and Assessment Authority

Papers

Sections PartsTopics

examinedQuestions 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 Combined Science (Chemistry Part)

NSS CHEMISTRY PUBLIC ASSESSMENT

* Emphasis would be put on Topics 9-12

# May include contents of Topics 1-12SBA

ChemistryPapers 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 1-8structured questions

(47 marks)essay (9 marks)

Part II Topics 1-12*structured questions

(28 marks)

Paper 2(1 hour)

20% 

Topics 13-15#

structured questions20 marks per

elective (40 marks)

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)

Public Assessment

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

NSS Chemistry School-based Assessment

SBA TASKS

Weight-ing

20% of Public Assessment

Mode Practical RelatedNon-practical

Related

Task type

Basic Chemical Analysis

ExperimentInvestigative

StudyAssignment

Task code

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 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

SBA

Experiment

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

SBA

Investigative StudyTask 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

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)

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

SBA

SBA requirements

Number of assessments on SBA tasks

 BCA EXPT IS ASSN

S6

1 3 1 1S5

S4 

(BCA, EXPT, IS and ASSN should spread out evenly across

S5 and S6)

SBA requirements

  Number of Experiments(including BCA & EXPT, but excluding IS)

S6

11S5

S4 8

NSS Combined Science (Chemistry Part) School –based Assessment

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 7S5

S4  4

(VA, EXPT and ASSN should spread out evenly across S5 and S6)