# Physical Sciences Grade 11 P2 North West November 2024 QP

> Grade 11 Physical Sciences Paper 2 question paper from the North West November Exam 2024 (English), 17 pages. Read online or download the free PDF.

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- Updated: 2026-09-28
- Subject: Physical Sciences
- Grade: Grade 11
- Language: English
- Document type: Question paper
- Year: 2024
- Exam period: North West November Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 17

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Physical Sciences · Grade 11 · North West November Exam · 2024 · English. Question paper, 17 pages. Read online or download the PDF.

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### Page 1

PROVINCIAL ASSESSMENT

                                   GRADE 11

                           PHYSICAL SCIENCES P2
                               NOVEMBER 2024

 Marks: 150

 Time: 3 hours

              This question paper consists of 12 pages and 4 data sheets.

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### Page 2

Physical Sciences/P2                        2                             NW/November 2024
                                           Grade 11

 INSTRUCTIONS AND INFORMATION:

 1.     Write your name on the ANSWER BOOK provided.

 2.     This question paper consists of NINE questions. Answer ALL questions in the
        ANSWER BOOK.

 3.     Start EACH question on a NEW page in the ANSWER BOOK.

 4.     Number the answers correctly according to the numbering system used in this
        question paper.

 5.     Leave ONE line between two sub-questions, for example between QUESTION
        2.1 and QUESTION 2.2.

 6.     You may use a non-programmable calculator.

 7.     You are advised to use the attached DATA SHEETS.

 8.     Show ALL formulae and substitutions in ALL calculations.

 9.     Round off your FINAL numerical answers to a minimum of TWO decimal places.

 10.    Give brief motivations, discussions, et cetera where required.

 11.    Write neatly and legibly.

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### Page 3

Physical Sciences/P2                         3                           NW/November 2024
                                            Grade 11

 QUESTION 1: MULTIPLE CHOICE QUESTIONS

 Various options are provided as possible answers to the following questions. Each question
 has only ONE correct answer. Choose the answer and write only the letter (A–D) next to
 the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 B.

 1.1    The type of bond which occurs when two atoms share one or more
        electron pairs will always be ...

        A        ionic.

        B        polar.

        C        metallic.
                                                                                           (2)
        D        covalent.

 1.2    The molecular shape of NH3 is ...

        A        linear.

        B        trigonal planar.

        C        angular.

        D        trigonal pyramidal.                                                       (2)

 1.3    Which ONE of the following chlorides will most likely have the most
        ionic character?

        A        LiCℓ

        B        CsCℓ

        C        BeCℓ2

        D        CaCℓ2                                                                     (2)

 1.4    A solution of calcium chloride (CaCℓ2) is added to bromine (Br2) water.
        The force of attraction that exists between CaCℓ2 particles and Br2 is
        called a(n) … interaction.

        A        ion-dipole

        B        ion-induced dipole

        C        dipole induced dipole

        D        dipole-dipole                                                             (2)

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### Page 4

Physical Sciences/P2                       4                              NW/November 2024
                                          Grade 11

 1.5    How many moles of copper (II) oxide are there in 52,8 g of the
        substance?

        A        0,369 mole

        B        0,664 mole

        C        1,51 mole

        D        2,71 mole                                                                  (2)

 1.6    The boiling point of CH4 is much lower than that of HF. Which ONE of
        the following best explains this difference in boiling points?

        A        HF molecules are more polar than CH4 molecules.

        B        CH4 molecules are more polar than HF molecules.

        C        There are London forces between CH4 molecules.

        D        There are dipole-dipole forces between CH4 molecules.                      (2)

 1.7    A fixed amount of gas occupies a volume V exerts a pressure P at a
        constant temperature. If the volume is doubled, the new pressure of the
        gas will be ...

        A        1⁄ P
                   4

        B        1⁄ P
                   2

        C        P

        D        4P                                                                         (2)

 1.8    Consider the incomplete chemical equation below.

                 X + 2HNO3 ⟶ Zn(NO3)2 + H2O + CO2

        Which ONE of the following is represented by X in the above equation?

        A        ZnCO3

        B        ZnHCO3

        C        ZnCO2

        D        Zn(OH)2                                                                    (2)

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### Page 5

Physical Sciences/P2                          5                              NW/November 2024
                                             Grade 11

 1.9    Which ONE of the following statements is TRUE for an EXOTHERMIC
        reaction?

        A        More energy is released than absorbed.

        B        More energy is absorbed than released.

        C        Heat of reaction (ΔH) is positive.

        D        Energy of the products is greater than the energy of the
                 reactants.                                                                     (2)

 1.10   Consider the reaction represented by the balanced ionic equation
        below.

                 Cr2O72-(aq) + 14H+(aq) + 3S2-(aq) → 2Cr3+(aq)+ 3S(s) + H2O(ℓ)

        Which ONE of statements below is true when this reaction takes place.

        A        The oxidation number of sulphur does not change.

        B        S2- is reduced by the Cr2O72-(aq).

        C        H+(aq) oxidises the S2-(aq).

        D        S2-(aq) is oxidised by the Cr2O72-(aq).                                        (2)
                                                                                               [20]

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### Page 6

Physical Sciences/P2                           6                           NW/November 2024
                                              Grade 11

 QUESTION 2 (Start on a new page.)

 A chemical bond is defined as a mutual attraction between two atoms resulting
 from the simultaneous attraction between their nuclei and the outer electrons.
 Answer the following questions in terms of chemical bonding.

 2.1 Define the term electronegativity.                                                       (2)

 2.2 Show by means of electronegativity what type of bond will be formed
     between the elements in each of the following substances.

      2.2.1          LiF                                                                      (2)

      2.2.2          Cℓ2                                                                      (2)

 2.3 Consider the following molecules and answer the questions that follow:

                     CO2 , C2H2 and CH4

      2.3.1          Define the term valence electrons.                                       (2)

      2.3.2          How many valence electrons does carbon have.                             (1)

      Draw the Lewis structure for the following molecules:

      2.3.3          CO2                                                                      (2)

      2.3.4          CH4                                                                      (2)

 2.4 Write down the molecular shape of the following molecules.

      2.4.1          CO2                                                                      (1)

      2.4.2          CH4                                                                      (1)

 2.5 The bond length between the carbon atoms in C2H4 and C2H6 are compared.

      2.5.1          Define the term bond length.                                             (2)

      2.5.2          Fully explain why the bond length of the bond between the carbon
                     atoms in C2H4 is shorter than that in C2H6.                              (3)

      2.5.3          What is the relationship between the bond length and bond
                     energy.                                                                  (2)

      2.5.4          How will the bond energy of the bond between the carbon atoms
                     in C2H4 compare to that in C2H6?

                     Choose from SMALLER THAN, GREATER THAN or EQUAL TO.                      (1)

 2.6 Explain the difference between a polar molecule and a non-polar molecule,
     using the compounds CHCl3 and CCl4 as examples.                                          (4)
                                                                                             [27]
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### Page 7

Physical Sciences/P2                            7                            NW/November 2024
                                               Grade 11

 QUESTION 3 (Start on a new page.)

 During an investigation, the MELTING POINTS of the hydrogen halides were
 determined. The results of the investigation are shown in the graph below.

      3.1            Define the term melting point.                                            (2)

      3.2            The melting points of HBr and HCℓ are compared.

                     3.2.1     What is the relationship between strength of the
                               intermolecular forces and melting point?                        (2)

                     3.2.2     Explain the difference in the melting points of HBr and
                               HCℓ by referring to the MOLECULAR MASS,
                               STRENGTH OF INTERMOLECULAR FORCES and
                               ENERGY.                                                         (3)

      3.3            Which ONE of the hydrogen halides in the graph above has the
                     lowest vapour pressure.                                                   (1)

      3.4            Explain in terms of INTERMOLECULAR FORCES why solid
                     iodine (I2) does not dissolve in water.                                   (2)
                                                                                              [10]

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### Page 8

Physical Sciences/P2                          8                            NW/November 2024
                                             Grade 11

 QUESTION 4 (Start on a new page.)

 The relationship between pressure and the volume of an enclosed gas at
 30 oC is investigated, by varying the pressure on the gas and then observing
 the corresponding volume occupied by the gas in each case.

 The results obtained are shown in the table below.

                       p (kPa)                             V (cm3)
                        128,5                                 35
                         180                                  25
                         220                                  V
                         330                                  20

 4.1    STATE the gas law being investigated.                                                (2)

 4.2    For this investigation write down the:

        4.2.1    Independent variable.                                                       (1)

        4.2.2    TWO controlled variables.                                                   (2)

 4.3    Calculate the value represented by the letter V in the table.                        (3)

 4.4    Hydrogen and helium are very close to ideal gases.

        4.4.1    Write down TWO properties of an ideal gas.                                  (2)

        4.4.2    Write down the TWO conditions under which real gases behave
                 more like an ideal gas.                                                     (2)

 4.5    Explain, in terms of the kinetic molecular theory, the effect that an
        increase in the temperature of a gas will have on its pressure at constant
        volume.                                                                              (2)
                                                                                            [14]

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### Page 9

Physical Sciences/P2                           9                             NW/November 2024
                                              Grade 11

 QUESTION 5 (Start on a new page.)

 One of the steps in the preparation of sulphuric acid in the industry is
 represented by the following reaction:

                               2SO2(g) + O2(g) → 2SO3(g)

 The graph below shows the energy change during this reaction.

        5.1      Write down the type of reaction represented by above graph.
                 Choose from EXOTHERMIC or ENDOTHERMIC. Explain your
                 answer.                                                                        (2)

        5.2      Calculate the change in enthalpy for this reaction.                            (2)

        Vanadium pentoxide is added as a catalyst in the above reaction.

        5.3      How will the addition of the catalyst affect the following?
                 Write down only INCREASES, DECREASES or REMAIN THE
                 SAME.

                 5.3.1   Activation energy.                                                     (1)

                 5.3.2   Heat of reaction.                                                      (1)

        5.4      At 68 kJ∙mol-1 an activated complex is formed.

                 5.4.1   Define the term activated complex.                                     (2)

                 5.4.2   Write down the activation energy for the reverse
                         reaction.                                                              (2)

        5.5      Calculate the volume of SO3 gas formed in the container when
                 50 cm3 of SO2 reacts completely with oxygen.                                   (2)
                                                                                               [12]
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### Page 10

Physical Sciences/P2                          10                            NW/November 2024
                                             Grade 11

 QUESTION 6 (Start on a new page.)

 Nicotine, an alkaloid in the nightshade family of plants that is mainly responsible
 for the addictive nature of cigarettes, contains 74,02 % C, 8,71 % H and
 17,27 % N.

 6.1    Define the term empirical formula.                                                     (2)

 6.2    Determine the empirical formula of nicotine.                                           (5)

        It was found experimentally that 40,57 g of nicotine contains 0,25 mol
        nicotine.

 6.3    Determine the molecular formula of nicotine?                                           (5)
                                                                                              [12]

 QUESTION 7 (Start on a new page.)

 A 12 g sample of IMPURE solid calcium carbonate, CaCO3, reacted with
 150 cm3 of a 2 mol·dm-3 excess hydrochloric acid, HCℓ, according to the
 following balanced equation:

        CaCO3(s) + 2HCℓ(aq) → CaCℓ2(aq) + H2O(ℓ) + CO2(g)

 The graph below shows how the mass of CO2 changes with time at STP.

        7.1      Define the term limiting reagent.                                             (2)

        7.2      Write down the NAME or FORMULA of the limiting reagent in
                 the above reaction.                                                           (1)

        7.3      Calculate the:

                 7.3.1   Maximum volume of CO2 produced.                                       (4)

                 7.3.2   Percentage purity of calcium carbonate.                               (6)

                 7.3.3   Moles of HCℓ in excess.                                               (5)
                                                                                              [18]
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### Page 11

Physical Sciences/P2                        11                            NW/November 2024
                                           Grade 11

 QUESTION 8 (Start on a new page.)

 8.1    Define a Brønsted-Lowry base.                                                        (2)

 8.2    Calculate the pH of a 0,1 mol·dm-3 of HCℓ                                            (3)

 8.3    Write down the FORMULA for the conjugate base of HCℓ.                                (1)
                       -
 8.4    Why is HSO4 regarded as an ampholyte?                                                (2)
                                                                           -
 8.5    Write down a balanced chemical equation for the reaction of HSO4
        with water to form the hydronium ion.                                                (3)

 8.6    A solution of potassium hydroxide(KOH) is prepared by dissolving 7,9 g
        of potassium hydroxide in 250 cm3 of distilled water.

        8.6.1    Calculate the concentration of potassium hydroxide solution.                (3)

        During titration 25 cm3 of the above solution is neutralised by 40 cm3 of
        a DILUTE sulphuric acid solution according to the balanced equation:

                H2SO4(aq) + 2KOH(aq) → K2SO4(aq) + 2H2O

        8.6.2    Calculate the concentration of the DILUTE acid.                             (4)

        The DILUTE acid in QUESTION 8.6.2 was prepared by adding 10 cm3
        of CONCENTRATED acid to 490 cm3 distilled water.

        8.6.3    Calculate the concentration of the CONCENTRATED acid.                       (4)
                                                                                            [22]

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### Page 12

Physical Sciences/P2                                12                   NW/November 2024
                                                Grade 11

 QUESTION 9 (Start on a new page.)

 A mixture containing Aluminium and Manganese oxide was heated to initiate
 the following redox reaction:

                               2Aℓ + 3MnO → Aℓ2O3 + 3Mn

 9.1    Define the term reduction in terms of oxidation numbers.                           (2)

 9.2    Write down the oxidation numbers of the following substances:

        9.2.1    Mn in MnO                                                                 (1)

        9.2.2    Aℓ in Aℓ2O3                                                               (1)

 9.3    Identify an oxidising agent in the above-mentioned reaction. Explain
        your answer by referring to oxidation numbers.                                     (3)

 9.4    Consider the following reaction:
                                            -
                           H+ + Cu +NO3 → H2O + Cu2+ + NO

        Write down the:

        9.4.1    Oxidation half reaction.                                                  (2)

        9.4.2    Reduction half reaction.                                                  (2)

        9.4.3    Balanced net ionic equation.                                           (4)
                                                                                       [15]

                                                                               TOTAL: 150

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### Page 13

Physical Sciences/P2                               1                       NW/November 2024
                                               Grade 11

                       DATA FOR PHYSICAL SCIENCES GRADE 11

                                   PAPER 2 (CHEMISTRY)

                          TABLE 1: PHYSICAL CONSTANTS

             NAME                           SYMBOL                  VALUE

 Standard pressure                            p          1,013 × 105 Pa

 Molar gas volume at STP                      Vm          22,4 dm3∙mol-1

 Standard temperature                         Tθ          273 K

 Charge on electron                           e           -1,6 × 10-19 C

 Avogadro’s constant                          NA          6,02 × 1023 mol-1

                                   TABLE 2: FORMULAE

        m                          n                       pH= -log[H3O+]
   n=        or             c=          or
        M                          V
                                                           Kw = [H3O+][OH-] = 1x10-14
        N                        m                         at 298K
   n=        or            c=
        NA                      MV

         V                 ca Va       na
   n=                              =
        Vm                 cb Vb       nb

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### Page 14

Physical Sciences/P2                                                                                               32                                NW/November 2024
                                                                                                                Grade 11

                                                                                   TABLE 4A: STANDARD REDUCTION POTENTIALS

                                                                         Half-reactions/Halfreaksies                                       Eθ (V)
                                                                         F2(g) + 2e                            ⇌   2F                    + 2,87
                                                                         Co3+ + e                              ⇌   Co2+                   + 1,81
                                                                                                            
                                                                                                                ⇌
                                                                                                    +               2H2O                   +1,77
                                                                         H2O2 + 2H +2e
                                                                              
                                                                                                                ⇌
                                                                                                                             2+
                                                                         MnO 4 + 8H+ + 5e                          Mn            + 4H2O   + 1,51
                                                                                                                            
                                                                         Cℓ2(g) + 2e                            ⇌   2Cℓ                    + 1,36
                                                                              2
                                                                         Cr2O 7 + 14H+ + 6e                    ⇌   2Cr3+ + 7H2O           + 1,33

                                                                         O2(g) + 4H+ + 4e                      ⇌   2H2O                   + 1,23
                                                                         MnO2 + 4H+ + 2e                       ⇌   Mn2+ + 2H2O            + 1,23
                                                                         Pt2+ + 2e                             ⇌   Pt                     + 1,20
                                                                                                                            
                                                                         Br2(ℓ) + 2e                            ⇌   2Br                    + 1,07
                                                                            
                                                                         NO 3 + 4H+ + 3e                       ⇌   NO(g) + 2H2O           + 0,96
                                                                                                                   Hg(ℓ)
                                                                                                                ⇌
                                                                              2+                                                           + 0,85
                                                                         Hg        + 2e

            Increasing oxidising ability/Toenemende oksiderende vermoë
                                                                         Ag+ + e                               ⇌   Ag                     + 0,80

                                                                                                                                                          Increasing reducing ability/Toenemende reduserende vermoë
                                                                            
                                                                         NO 3 + 2H+ + e                        ⇌   NO2(g) + H2O           + 0,80
                                                                                         
                                                                                                                ⇌
                                                                              3+                                         2+
                                                                         Fe        +e                               Fe                     + 0,77
                                                                         O2(g) + 2H+ + 2e                      ⇌   H2O2                   + 0,68
                                                                                                                        
                                                                         I2 + 2e                                ⇌   2I                     + 0,54
                                                                                        
                                                                                                                ⇌
                                                                              +                                     Cu                     + 0,52
                                                                         Cu + e
                                                                         SO2 + 4H+ + 4e                        ⇌   S + 2H2O               + 0,45
                                                                         2H2O + O2 + 4e                        ⇌   4OH                   + 0,40
                                                                                                
                                                                                                                ⇌
                                                                              2+
                                                                         Cu        + 2e                             Cu                     + 0,34
                                                                            2
                                                                         SO 4 + 4H+ + 2e                       ⇌   SO2(g) + 2H2O          + 0,17

                                                                         Cu2+ + e                              ⇌   Cu       +
                                                                                                                                           + 0,16
                                                                         Sn4+ + 2e                             ⇌   Sn2+                   + 0,15
                                                                                                        
                                                                                                                ⇌
                                                                                     +                              H2S(g)                 + 0,14
                                                                         S + 2H + 2e
                                                                         2H+ + 2e                              ⇌   H2(g)                  0,00
                                                                         Fe3+ + 3e                             ⇌   Fe                      0,06
                                                                         Pb2+ + 2e                             ⇌   Pb                      0,13
                                                                         Sn   2+
                                                                                   + 2e      
                                                                                                                ⇌   Sn                      0,14
                                                                         Ni2+ + 2e                             ⇌   Ni                      0,27
                                                                         Co2+ + 2e                             ⇌   Co                      0,28
                                                                         Cd   2+
                                                                                   + 2e         
                                                                                                                ⇌   Cd                      0,40
                                                                         Cr3+ + e                              ⇌   Cr2+                    0,41
                                                                         Fe2+ + 2e                             ⇌   Fe                      0,44
                                                                         Cr3+ + 3e                             ⇌   Cr                      0,74
                                                                         Zn   2+
                                                                                   + 2e      
                                                                                                                ⇌   Zn                      0,76
                                                                         2H2O + 2e                             ⇌   H2(g) + 2OH            0,83
                                                                         Cr2+ + 2e                             ⇌   Cr                      0,91
                                                                         Mn2+ + 2e                             ⇌   Mn                      1,18
                                                                         Aℓ   3+
                                                                                   + 3e      
                                                                                                                ⇌   Aℓ                      1,66
                                                                         Mg2+ + 2e                             ⇌   Mg                      2,36
                                                                         Na+ + e                               ⇌   Na                      2,71
                                                                         Ca2+ + 2e                             ⇌   Ca                      2,87
                                                                              2+
                                                                         Sr + 2e            
                                                                                                                ⇌   Sr                      2,89
                                                                         Ba2+ + 2e                             ⇌   Ba                      2,90
                                                                         Cs+ + e-                               ⇌   Cs                     - 2,92
                                                                         K+ + e                                ⇌   K                       2,93
                                                                          +
                                                                         Li + e     
                                                                                                                ⇌   Li                      3,05

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### Page 15

Physical Sciences/P2                                                                                                   32                       NW/November 2024
                                                                                                                    Grade 11

                                                                          TABLE 4B: STANDARD REDUCTION POTENTIALS

                                                                         Half-reactions/Halfreaksies                                  Eθ (V)
                                                                         Li+ + e                               ⇌     Li               3,05
                                                                         K+ + e                                ⇌     K                2,93
                                                                         Cs+ + e                               ⇌     Cs               2,92
                                                                         Ba2+ + 2e                             ⇌     Ba               2,90
                                                                         Sr2+ + 2e                             ⇌     Sr               2,89
                                                                         Ca2+ + 2e                             ⇌     Ca               2,87
                                                                            +
                                                                         Na + e     
                                                                                                                ⇌     Na               2,71
                                                                         Mg2+ + 2e                             ⇌     Mg               2,36
                                                                         Aℓ3+ + 3e                             ⇌     Aℓ               1,66
                                                                         Mn2+ + 2e                             ⇌     Mn               1,18
                                                                         Cr2+ + 2e                             ⇌     Cr               0,91
                                                                         2H2O + 2e                             ⇌     H2(g) + 2OH     0,83
                                                                         Zn2+ + 2e                             ⇌     Zn               0,76

            Increasing oxidising ability/Toenemende oksiderende vermoë                                                                                Increasing reducing ability/Toenemende reduserende vermoë
                                                                           3+
                                                                         Cr + 3e         
                                                                                                                ⇌     Cr               0,74
                                                                         Fe2+ + 2e                             ⇌     Fe               0,44
                                                                         Cr3+ + e                              ⇌     Cr2+             0,41
                                                                         Cd2+ + 2e                             ⇌     Cd               0,40
                                                                         Co2+ + 2e                             ⇌     Co               0,28
                                                                         Ni2+ + 2e                             ⇌     Ni               0,27
                                                                            2+
                                                                         Sn + 2e            
                                                                                                                ⇌     Sn               0,14
                                                                         Pb2+ + 2e                             ⇌     Pb               0,13
                                                                         Fe3+ + 3e                             ⇌     Fe               0,06
                                                                         2H+ + 2e                              ⇌     H2(g)           0,00
                                                                                                    
                                                                                                                ⇌
                                                                                 +
                                                                         S + 2H + 2e                                  H2S(g)          + 0,14
                                                                                            
                                                                                                                ⇌
                                                                            4+                                              2+
                                                                         Sn + 2e                                      Sn              + 0,15
                                                                         Cu2+ + e                              ⇌     Cu+             + 0,16
                                                                            2
                                                                         SO 4 + 4H+ + 2e                       ⇌     SO2(g) + 2H2O   + 0,17

                                                                         Cu2+ + 2e                             ⇌     Cu              + 0,34
                                                                                                                                
                                                                         2H2O + O2 + 4e                         ⇌     4OH             + 0,40
                                                                         SO2 + 4H+ + 4e                        ⇌     S + 2H2O        + 0,45
                                                                         Cu+ + e                               ⇌     Cu              + 0,52
                                                                         I2 + 2e                               ⇌     2I             + 0,54
                                                                                                            
                                                                                                                ⇌
                                                                                                +
                                                                         O2(g) + 2H + 2e                              H2O2            + 0,68
                                                                                     
                                                                                                                ⇌
                                                                           3+                                              2+
                                                                         Fe + e                                       Fe              + 0,77
                                                                            
                                                                         NO 3 + 2H+ + e                        ⇌     NO2(g) + H2O    + 0,80
                                                                                    
                                                                                                                ⇌
                                                                            +
                                                                         Ag + e                                       Ag              + 0,80
                                                                         Hg2+ + 2e                             ⇌     Hg(ℓ)           + 0,85
                                                                            
                                                                         NO 3 + 4H+ + 3e                       ⇌     NO(g) + 2H2O    + 0,96

                                                                         Br2(ℓ) + 2e                           ⇌     2Br            + 1,07
                                                                                            
                                                                                                                ⇌
                                                                           2+
                                                                         Pt + 2 e                                     Pt              + 1,20
                                                                         MnO2 + 4H+ + 2e                       ⇌     Mn2+ + 2H2O     + 1,23
                                                                         O2(g) + 4H+ + 4e                      ⇌     2H2O            + 1,23
                                                                              2
                                                                         Cr2O 7 + 14H+ + 6e                    ⇌     2Cr3+ + 7H2O    + 1,33

                                                                         Cℓ2(g) + 2e                           ⇌     2Cℓ            + 1,36
                                                                              
                                                                                                                ⇌
                                                                                                                            2+
                                                                         MnO 4 + 8H+ + 5e                            Mn + 4H2O       + 1,51

                                                                         H2O2 + 2H+ +2 e                       ⇌     2H2O            +1,77
                                                                                        
                                                                                                                ⇌     Co2+
                                                                            3+
                                                                         Co + e                                                       + 1,81
                                                                                                                          
                                                                         F2(g) + 2e                             ⇌     2F              + 2,87

Copyright reserved                                                                                                                             Please turn over

### Page 16

Physical Sciences/P2                                                                                   4                                                 NW/November 2024
                                                                                                    Grade 11

THE PERIODIC TABLE OF ELEMENTS

1           2           3                     5         6                   8             9           10       11       12      13       14      15      16      17       18
                                    4                             7
(I)         (II)                                                                                                                (III)    (IV)    (V)     (VI)    (VII)    (VIII)
                                              KEY
      1                                                                                                                                                                     2
                                                                            Atomic number
      H                                                                                                                                                                     He
2,1
      1                                                                                                                                                                     4
                                                                                         29
      3           4                                                                                                                5       6       7       8       9        10
      Li          Be                                Electronegativity              1,9                  Symbol                     B       C       N       O       F        Ne
1,0         1,5                                                                          Cu                                     2,0      2,5     3,0     3,5     4,0
      7           9                                                                                                                11      12      14      16      19       20
      11          12                                                                                                               13      14      15      16      17       18
      Na          Mg                                                                                                               Aℓ      Si      P       S       Cℓ       Ar
0,9         1,2                                                       Approximate relative atomic mass                          1,5      1,8     2,1     2,5     3,0
      23          24                                                                                                               27      28      31      32      35,5     40
      19          20          21        22        23        24        25        26              27      28       29       30       31      32      33      34      35       36
      K           Ca          Sc        Ti        V         Cr        Mn        Fe              Co      Ni       Cu       Zn       Ga      Ge      As      Se      Br       Kr
0,8         1,0         1,3         1,5       1,6       1,6       1,5        1,8              1,8     1,8      1,9      1,6     1,6      1,8     2,0     2,4     2,8
      39          40          45        48        51        52        55        56              59      59       63,5     65       70      73      75      79      80       84
      37          38          39        40        41        42        43        44              45      46       47       48       49      50      51      52      53       54
      Rb          Sr          Y         Zr        Nb        Mo        Tc        Ru              Rh      Pd       Ag       Cd       In      Sn      Sb      Te      I        Xe
0,8         1,0         1,2         1,4                 1,8       1,9        2,2              2,2     2,2      1,9      1,7     1,7      1,8     1,9     2,1     2,5
      86          88          89        91        92        96                  101             103     106      108      112      115     119     122     128     127      131
      55          56          57        72        73        74        75        76              77      78       79       80       81      82      83      84      85       86
      Cs          Ba          La        Hf        Ta        W         Re        Os              Ir      Pt       Au       Hg       Tℓ      Pb      Bi      Po      At       Rn
0,7   133   0,9   137         139   1,6 179       181       184       186       190             192     195      197      201   1,8204   1,8
                                                                                                                                           207   1,9
                                                                                                                                                   209   2,0     2,5
      87          88          89
      Fr          Ra          Ac
0,7         0,9   226                         58        59        60         61               62      63       64       65       66       67      68      69      70       71
                                              Ce        Pr        Nd         Pm               Sm      Eu       Gd       Tb       Dy       Ho      Er      Tm      Yb       Lu
                                              140       141       144                         150     152      157      159      163      165     167     169     173      175
                                              90        91        92        93            94          95       96       97      98       99      100     101     102      103
                                              Th        Pa        U         Np            Pu          Am       Cm       Bk      Cf       Es      Fm      Md      No       Lr
                                              232                 238

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### Page 17

Physical Sciences/P2              4

                                      NW/November 2024
                       Grade 11

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