Chem Pp 2012 Dse
香港考試及評核局 HONG KONG EXAMINATIONS AND ASSESSMENT AUTHORITY 香港中學文憑考試 HONG KONG DIPLOMA OF SECONDARY EDUCATION EXAMINATION 練習卷 PRACTICE PAPER 化學 試卷一 CHEMISTRY PAPER 1 評卷參考 MARKING SCHEME (2012年2月22日修訂稿) (updated as at 22 Feb 2012)
Hong Kong Examinations and Assessment Authority All Rights Reserved 2012
PP-DSE-CHEM 1–1
權版留保
局核評及試考港香
©
。旨之巧技用運與力能解理重着試考違有亦 ，難解及對應懂學，習學善改生學助無既，度態習學種這。吞生剝 活，記死背硬，案答準標為視考參卷評將應不生學。用之考參生學 和師教供，寫編而卷習練科本為專局核評及試考港香乃考參卷評本
This marking scheme has been prepared by the Hong Kong Examinations and Assessment Authority for teachers’ and students’ reference. This marking scheme should NOT be regarded as a set of model answers. Our examinations emphasise the testing of understanding, the practical application of knowledge and the use of processing skills. Hence the use of model answers, or anything else which encourages rote memorisation, will not help students to improve their learning nor develop their abilities in addressing and solving problems.
SECTION A
Part I Question No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Part II Question No. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Key A D A B C A D B D C B C Key B D A D C B B C B B B A A C D A D A C C B A D D
PP-DSE-CHEM 1–2
SECTION B General Notes for Teachers on Marking
1.
The marking scheme has been updated, with revisions made after the scrutiny of actual samples of student performance in the practice papers. Teachers are strongly advised to conduct their own internal standardisation procedures before applying the marking schemes. After standardisation, teachers should adhere to the marking scheme to ensure a uniform standard of marking within the school.
2.
The marking scheme may not exhaust all possible answers for each question. Teachers should exercise their professional discretion and judgment in accepting alternative answers that are not in the marking scheme but are correct and well reasoned.
3.
The following symbols are used:
Hong Kong Examinations and Assessment Authority All Rights Reserved 2012
PP-DSE-CHEM 1–1
權版留保
局核評及試考港香
©
。旨之巧技用運與力能解理重着試考違有亦 ，難解及對應懂學，習學善改生學助無既，度態習學種這。吞生剝 活，記死背硬，案答準標為視考參卷評將應不生學。用之考參生學 和師教供，寫編而卷習練科本為專局核評及試考港香乃考參卷評本
This marking scheme has been prepared by the Hong Kong Examinations and Assessment Authority for teachers’ and students’ reference. This marking scheme should NOT be regarded as a set of model answers. Our examinations emphasise the testing of understanding, the practical application of knowledge and the use of processing skills. Hence the use of model answers, or anything else which encourages rote memorisation, will not help students to improve their learning nor develop their abilities in addressing and solving problems.
SECTION A
Part I Question No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Part II Question No. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Key A D A B C A D B D C B C Key B D A D C B B C B B B A A C D A D A C C B A D D
PP-DSE-CHEM 1–2
SECTION B General Notes for Teachers on Marking
1.
The marking scheme has been updated, with revisions made after the scrutiny of actual samples of student performance in the practice papers. Teachers are strongly advised to conduct their own internal standardisation procedures before applying the marking schemes. After standardisation, teachers should adhere to the marking scheme to ensure a uniform standard of marking within the school.
2.
The marking scheme may not exhaust all possible answers for each question. Teachers should exercise their professional discretion and judgment in accepting alternative answers that are not in the marking scheme but are correct and well reasoned.
3.
The following symbols are used: