DSE Exam TrendDSE 試題趨勢情報

以下為近年公開試題目的課題分佈。

卷一  甲部

課題 2016 2015 2014 2013 2012

Planet Earth 1 23 — 19 —

Microscopic World I 2, 3 3, 11, 15, 25 1, 2 1, 2, 12, 23 1, 8, 15

Metals 4, 5, 7, 23 5, 7, 14, 21 3, 4, 14, 18, 19

5, 7, 13, 16 3, 9, 16, 23

Acids and Bases 6, 8, 9, 18, 19

1, 4, 8, 9 5, 6, 7, 12, 13, 15, 21,

24

3, 8, 9, 10, 11, 22

2, 4, 10, 19, 20

Fossil Fuels and Carbon Compounds

10, 17 — 8, 10, 17 14, 20 11, 17, 21, 24

Microscopic World II 16, 21 24 22, 23 24 5, 12

Redox Reactions, Chemical Cells and Electrolysis

11, 12, 13, 14, 15, 20

6, 13, 16, 17 11, 16, 20 4, 6, 17, 21 6, 13, 18, 22

Chemical Reactions and Energy

22, 24 12, 33, 18 9 15, 18 7, 14

Rate of Reaction 25, 33, 34 28, 26 25 25, 33 25

Chemical Equilibrium 26, 27 27, 31 26, 31, 35 27, 28 26, 27, 35

Chemistry of Carbon Compounds

28, 29, 31, 32, 35

10, 19, 20, 26, 29, 30,

32, 34

27, 28, 29, 32, 33, 34

29, 30, 31, 32, 34, 35

28, 29, 32, 33, 34, 36

Pattern in the Chemical World

30, 36 35 30, 36 26, 36 30, 31

3DSE Exam Trend

Common Error考生常犯錯誤大檢閱

綜合歷屆化學科，考生的表現如下：

1. 未能回答涉及有關反應計量中的質量╱滴定實驗的質量╱摩爾╱濃度計算╱焓變的計算╱化學平衡的問題

2. 常混淆一些基本的化學概念，如結構、鍵合、分子間引力、物理和化學變化、氧化還原反應

3. 未能正確說出化學測試中完整的預期觀察及顏色變化4. 未能正確使用化學詞彙

2013至 2015年試卷一乙部的整體表現：

題號 2013 2014 2015

1 良好 尚可 良好

2 良好 令人滿意 尚可

3 令人滿意 良好 尚可

4 令人滿意 良好 尚可

5 尚可 尚可 尚可

6 尚可 尚可 尚可

7 良好 欠佳 尚可

8 尚可 令人滿意 尚可

9 尚可 令人滿意 欠佳

10 尚可 尚可 令人滿意

11 令人滿意 尚可 差劣

12 令人滿意 尚可 欠佳

13 尚可 尚可 尚可

14 尚可 尚可 —

15 令人滿意 — —

✗

✗

✗✗

2 Getting 5** in 9 Weeks: Chemistry (Third Edition)

Revision Programme 温習計劃 – Week9 9 星期進入倒數月

RecessRecess

RecessRecess

Recess Recess

Recess Recess

Recess

RecessRecess

Recess Recess

Recess

Recess

Recess

week 1week 2week 3week 4week 5week 6week 7week 8week 9

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 1 Day 2 Day 3 Day 5 Day 6 Day 7

Day 12 Day 13 Day 14Day 8 Day 9 Day 10

Day 4

Day 4

Day 4

Day 4

Day 4

Day 4

Day 4

Day 4

Day 11

Microscopic World

Inorganic Chemistry (1)

Inorganic Chemistry (2)

Organic Chemistry (1)

Organic Chemistry (2)

Quantitative Measures in Chemistry (1)

Quantitative Measures in Chemistry (2)

1st Elective

2nd Elective

9 星期温習計劃

配合化學科的特點，由應試專家精心設計 9個

星期的温習計劃，助你籌劃個人化的温習大計。

2012 至 2015 年

分析對象

香港中學文憑試 2012至 2015年試題

試卷結構

卷一甲部有 36道多項選擇題。卷一乙部有 13至 16道題目，佔 84分。

卷二有甲乙丙三部，每部一題，每題 20分，考生須選擇其中兩部作答。

如想取得佳績，大家必須留意。

卷一甲部 Q1，Q16，Q26卷一乙部 Q4b&c，Q4d(i)，Q6e(ii)，Q9b，Q11a(ii)，Q11b，Q12卷二 Q1b，Q2a，Q2c，Q3a

2015

卷一甲部 Q3，Q7，Q21，Q31卷一乙部 Q7b，Q8a，Q14a卷二 Q1c，Q2a，Q2b(i)(ii)，Q3c

2014

卷一甲部 Q15，Q22，Q32卷一乙部 Q3a，Q4a，Q4b，Q5，Q8，Q11b卷二 Q1a，Q1c，Q2b(iii)，Q2c

2013

卷一甲部 Q17，Q23，Q28卷一乙部 Q5b，Q7c，Q8c，Q13，Q15，Q16c卷二 Q1a(iv)，Q1b(iii)，Q1c(i)，Q2a(ii)，Q3b

2012

2012 至 2015 年

2012 至 2015 年考卷中難題一覽

6 Getting 5** in 9 Weeks: Chemistry (Third Edition)

DSE Exam TrendDSE 試題趨勢情報

以下為近年公開試題目的課題分佈。

卷一 甲部

課題 2016 2015 2014 2013 2012

Planet Earth 1 23 — 19 —

Microscopic World I 2, 3 3, 11, 15, 25 1, 2 1, 2, 12, 23 1, 8, 15

Metals 4, 5, 7, 23 5, 7, 14, 21 3, 4, 14, 18, 19

5, 7, 13, 16 3, 9, 16, 23

Acids and Bases 6, 8, 9, 18, 19

1, 4, 8, 9 5, 6, 7, 12, 13, 15, 21,

24

3, 8, 9, 10, 11, 22

2, 4, 10, 19, 20

Fossil Fuels and Carbon Compounds

10, 17 — 8, 10, 17 14, 20 11, 17, 21, 24

Microscopic World II 16, 21 24 22, 23 24 5, 12

Redox Reactions, Chemical Cells and Electrolysis

11, 12, 13, 14, 15, 20

6, 13, 16, 17 11, 16, 20 4, 6, 17, 21 6, 13, 18, 22

Chemical Reactions and Energy

22, 24 12, 33, 18 9 15, 18 7, 14

Rate of Reaction 25, 33, 34 28, 26 25 25, 33 25

Chemical Equilibrium 26, 27 27, 31 26, 31, 35 27, 28 26, 27, 35

Chemistry of Carbon Compounds

28, 29, 31, 32, 35

10, 19, 20, 26, 29, 30,

32, 34

27, 28, 29, 32, 33, 34

29, 30, 31, 32, 34, 35

28, 29, 32, 33, 34, 36

Pattern in the Chemical World

30, 36 35 30, 36 26, 36 30, 31

3DSE Exam Trend

考卷逐一解 分析 DSE 考卷，

指出必讀的應考

事項。

DSE 試題趨勢情報

分析DSE各卷的熱門課題或常

見題目，掌握考試擬題趨勢。

考生常犯錯誤大檢閱 列出考生於 DSE（文憑試）

的常犯錯誤。

Weeks

HKEP

Day

Day

Day

Day

Day

Day

Day

1

2

3

4

5

6

7

Ch. 1Microscopic World5 DAYS

Recess

Week 1

Microscopic World1Chapter

以下為近年涉及此課題的公開試卷一乙部的結構式題目。

Section 2016 2015 2014 2013 2012

1.1 Atomic Structure 1(a) 1(a-b)

1.2 Periodic Table 8(a), (c)

1.3 Chemical Bonds 1(c)(ii) 1(a-b), 8(b)(i)

1(a), 2(c), 8(b)

1.4 Properties of Different Kinds of Compounds

1(a-b) 13 1(d)

1.5 Periodic Variation of Elements

14 10(a) 11 13 16

1.6 Simple Molecular Substances with Non-octet

Structures and Their Shapes

4(a) 2(a)

1.7 Bond Polarity 4(b) 2(b) 12(b)

1.8 Intermolecular Forces 4(c) 1(c), 2 1(c) 4

20

Covalent bonds

• Covalent bonds are the formation of chemical bonds by non-metals only.

Examples Cl2, I2, H2O

Electronic diagram

By sharing the electron pairs with each other, the non-metal atoms attain stable duplet or octet noble gas structures.

• If both of the electrons in the shared pair are provided by the same atom, the covalent bond formed is called dative covalent bond. For example:

• Covalent substances have two different structures: 1. Simple molecular structure – It is composed of separate molecules. – Within the molecules, the atoms are held together by strong covalent bonds. The

separate molecules are held together by weak van der Waals’ forces.

2. Giant covalent structure – It is made from millions of atoms linked together by strong covalent bonds. – For example, in the diamond structure, each carbon atom forms strong covalent

bonds with the others tetrahedrally.

Getting 5** in 9 Weeks: Chemistry (Fourth Edition)

72 Getting 5** in 9 Weeks: Chemistry (Fourth Edition)

3.2 ElectrochemicalSeriesandRedoxEquations

Electrochemical series (E. C. S.)

• The electrochemical series is used to predict possible redox reactions.

ReductionOxidation

Ionic half equation

Li+(aq) + e- C Li(s) K+(aq) + e- C K(s) Ca2+(aq) + 2e- C Ca(s) Na+(aq) + e- C Na(s) Mg2+(aq) + 2e- C Mg(s) Al3+(aq) + 3e- C Al(s) Zn2+(aq) + 2e- C Zn(s) Fe2+(aq) + 2e- C Fe(s) Pb2+(aq) + 2e- C Pb(s) 2H+(aq) + 2e- C H2(g) H2SO4(l) + 2H+(aq) + 2e- C SO2(g) + 2H2O(l) Cu2+(aq) + 2e- C Cu(s) O2(g) + 2H2O(l) + 4e- C 4OH-(aq) I2(aq) + 2e- C 2I-(aq) Fe3+(aq) + e- C Fe2+(aq) Ag+(aq) + e- C Ag(s) Br2(aq) + 2e- C 2Br-(aq) Cr2O7

2-(aq) + 14H+(aq) + 6e- C 2Cr3+(aq) + 7H2O(l) Cl2(g) + 2e- C 2Cl-(aq) MnO4

-(aq) + 8H+(aq) + 5e- C Mn2+(aq) + 4H2O(l) F2(g) + 2e- C 2F-(aq)

Weak oxidizing agents

Strong oxidizing agents

Strong reducing agents

Weak reducing agents

電化序在預測反應

的可能性和電解的

結果非常有用，應

緊記。

WE

EK

1

2

3

4

5

6

7

8

9

Organic Chemistry (2) 139

5.8 SeparationandPurificationofOrganicProducts

• We use the following procedures to isolate the organic product:

Reagent

Distillation

Fractional distillationSolvent extraction

Recrystallisation

Liquidproduct

Solidproduct

Distillation

• If the by-products of the main reaction and the unreacted reagents are non-volatile, the organic liquid product can be separated out by distillation.

Fractional distillation

• It is used to separate a mixture of miscible liquids.

• A fractionating column is a gas column packed with glass or stainless steel beads to provide a large surface area for the condensation of the organic product.

如混合物內液體的沸點太接近，則混合物難以分離。

Solvent extraction• When the liquid product formed is in an aqueous solution, it is often extracted by adding

another organic solvent to the product mixture.

• Diethyl ether (Ethoxyethane) is a good solvent. This is because it is chemically unreactive.

Materials Chemistry9Chapter

9.1NaturallyOccurringPolymers• Polymer is a compound consisting of very large molecules, which are formed from many

small molecules (monomers) joined together repeatedly.

• They can be divided into natural or man-made polymers.

• Examples of naturally occurring polymers are cellulose and chitin.

Cellulose and chitin• Differences between cellulose and chitin:

Cellulose Chitin

General formula

(C6H10O5)n (C8H13NO5)n

Structure A straight chain polymer of b-glucose with b-1,4-glycosidic linkage

A straight chain polymer of acetylglucosamine with b-1,4-glycosidic linkage

Bonding between polymer

chain

Hydrogen bond Hydrogen bond