英皇_2006_mock_chem_I_ans_chris

英皇_2006_mock_chem_...

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Prepared by Chris Tse CHEMISTRY Paper 1 Marking Scheme Chris Tse Chris Tse z 極具實力 - 香港大學榮譽理學士、港大教育深 造證書。十多年教授會考 / 高考化學科經驗。對 考試要求、評分標準及考生常犯錯誤瞭如指掌。 z 廣受歡迎 - 曾接受眾多媒體,如《香港電台》、 《新城電台》、《有線電視》、《明報》和《學友 社》邀請,接受訪問及撰寫考試專欄。更連續 數年被《香港學生福利聯盟》和《小童群益會》 邀請主講中五和中七考試講座,反應熱烈。 z 筆記獨到 - 清晰詳盡並附以考試要訣、溫習心 得和大量練習題目,廣受同學歡迎。同學均認 為,只溫謝 Sir 筆記,已經足夠應付考試。 z 課堂生動 - 上課節奏明快,並利用具體例子來 說明抽象理論,令同學可在短時間內掌握和應 用化學上的重要課題。 z 成績卓越 - Sir 所教學生無數,會考和高考 都有眾多同學考獲優良成績。
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Chemistry Mock Examination 2006 Answers and allocation of marks Prepared by Chris Tse
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Suggested solution and allocation of marks Section A 1. (a) (i) 2 Mg + SO 2 2 MgO + S [1] (ii) The oxidation number of Mg has increased from 0 to +2 [1] and that of S has reduced from +4 to 0. [1] A change in oxidation number indicates that the reaction is a redox reaction. [1] (iii) [ 1 ] (b) (i) Magnesium dissolved to give a colourless solution [1] / a colourless gas is given off. [1]
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英皇_2006_mock_chem_...

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