# Physical Sciences Grade 11 Paper 2 Gauteng June 2017 Memo

> Grade 11 Physical Sciences Paper 2 memorandum from the Gauteng June 2017, 14 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/gr11-phy-p2-eng-afr-june-2017-possible-answers/305f5cfe-3c89-4d45-8559-35b65e4f133a
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 11
- Document type: Memorandum
- Year: 2017
- Exam period: Gauteng June
- Paper: 2
- Curriculum: CAPS
- Pages: 14

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## About this document

Physical Sciences · Grade 11 · Gauteng June · 2017. Memorandum, 14 pages. Read online or download the PDF.

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### Page 1

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               GAUTENG DEPARTMENT OF EDUCATION
           GAUTENGSE DEPARTEMENT VAN ONDERWYS
                     PROVINCIAL EXAMINATION
                      PROVINSIALE EKSAMEN
                      JUNE / JUNIE 2017
                        GRADE / GRAAD 11

                        PHYSICAL SCIENCES
                       FISIESE WETENSKAPPE

                       PAPER / VRAESTEL 2

                         MEMORANDUM

14 pages / bladsye

                               1

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                                         Physical Sciences / Fisiese Wetenskappe
                     MEMORANDUM         (Paper / Vraestel 2)   GRADE / GRAAD 11

                   GAUTENG DEPARTMENT OF EDUCATION
                GAUTENGSE DEPARTEMENT VAN ONDERWYS
                        PROVINCIAL EXAMINATION
                         PROVINSIALE EKSAMEN

                                 PHYSICAL SCIENCES / FISIESE WETENSKAPPE
                                                          (Paper / Vraestel 2)

QUESTION 1: MULTIPLE-CHOICE QUESTIONS
VRAAG 1: MEERVOUDIGEKEUSE-VRAE

1.1   B   ✓✓                                                           (2)
1.2   B   ✓✓                                                           (2)
1.3   D   ✓✓                                                           (2)
1.4   C   ✓✓                                                           (2)
1.5   A   ✓✓                                                           (2)
1.6   D   ✓✓                                                           (2)
1.7   D   ✓✓                                                           (2)
1.8   C   ✓✓                                                           (2)
1.9   A   ✓✓                                                           (2)
1.10 B    ✓✓                                                           (2)
                                                                       [20]

                                   2

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                                                   Physical Sciences / Fisiese Wetenskappe
                           MEMORANDUM             (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 2 / VRAAG 2

2.1   Boiling point is the temperature when a liquid’s vapour pressure is equal to
      its atmospheric pressure.✓✓
      Kookpunt is die temperatuur wanneer die dampdruk van ŉ vloeistof gelyk is
      aan die atmosferiese druk.✓✓                                                   (2)
      2.2.1     He ✓                                                                 (1)
      2.2.2     NH3 ✓                                                                (1)
      2.2.3     NaCℓ ✓                                                               (1)
      2.2.4     CCℓ4 ✓                                                               (1)

2.3   2.3.1     London / dispersion forces✓✓
                London / dispersiekragte.✓✓                                          (2)
      2.3.2     Dipole – dipole forces ✓✓
                Dipool – dipoolkragte ✓✓                                             (2)
      2.3.3     Ionic bonds ✓✓
                Ioniese kragte ✓✓                                                    (2)
                                                                                     [12]

                                              3

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                                                  Physical Sciences / Fisiese Wetenskappe
                           MEMORANDUM            (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 3 / VRAAG 3

3.1   3.1.1     The sharing of one or more pairs of electrons between two non-
                metals to form a molecule.✓✓
                Die deel van een of meer elektronpare, tussen twee nie-metale      (2)
                om ŉ molekule te vorm.✓✓
      3.1.2     A measure of an atom’s attractive force on bonding electrons to
                form a molecule ✓✓
                ŉ Aanduiding van die atoom se aantrekkingskrag op die
                verbindingselektrone van ŉ molekule                                (2)

3.2

                                 ✓✓                                                (2)
3.3   The ∆EN between C and H is 2,5 -2,1 = 0,4 which gives it a polar bond, ✓✓
      but the shape of the molecule is symmetrical  non-polar molecule.✓✓
      Die ∆EN tussen C en H is 2,5 -2,1 = 0,4 wat polêre binding is, ✓✓ maar die
      vorm van die molekule is simmetries  nie-polêre molekule.✓✓                 (4)

3.4   3.4.1     Ammonia / NH3 ✓
                Ammoniak / NH3 ✓                                                   (1)
      3.4.2     Methane / CH4 ✓
                Metaangas / CH4 ✓                                                  (1)
      3.4.3     Sulphur dioxide / SO2 ✓
                Swaeldioksied / SO2 ✓                                              (1)
      3.4.4     Carbon dioxide / CO2 ✓
                Koolstofdioksied / CO2 ✓                                           (1)
3.5   Ammonia / NH3 ✓ – polar substance will ionise in a polar liquid.✓
      Ammoniak / NH3 ✓ – ŉ polêre molekule sal ioniseer in ŉ polêre vloeistof.✓    (2)
                                                                                   [16]

                                             4

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                                                   Physical Sciences / Fisiese Wetenskappe
                            MEMORANDUM            (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 4 / VRAAG 4
4.1   H2O                                                                             (1)
4.2
      H2O EN = 3,5 – 2,1 = 1,4 ✓ polar covalent ✓ O attract shared
      electron pair more than Hydrogen
      H2O EN = 3,5 – 2,1 = 1.4 ✓ polêr kovalent ✓ O trek die gedeelde
      elektronpaar meer as die Waterstof.                                             (2)

4.3                                Big spaces between molecules ✓
                                   Positive side of one molecule aligned with
                                   negative side of next molecule✓

                                   Groot spasies tussen molekules ✓
                                   Positiewe kant van een molekule
                                   georiënteer met negatiewe kant van
                                   volgende molekule.✓                                (2)

4.4   Ice has a very regular pattern with the molecules rigidly apart from one
      another, connected by the hydrogen bonds that form a crystalline lattice.✓
      These crystals have a number of open regions and pockets making ice less
      dense than liquid water.✓
      Watermolekules in ys het ŉ presiese, rigiede patroon in ŉ kristallyne vorm.✓
      Die kristallyne vorm het ŉ groot aantal oop ruimtes wat ys minder dig as
      water maak.✓                                                                    (2)
4.5   As water evaporates from leaves, it tugs on the water molecules below
      -Cohesion and adhesion pull water up and replace missing water molecules
      ✓
      Capillarity: Water molecules will “tow” each other along when in a thin tube. ✓
      Soos wat die water deur die blare verdamp, trek dit die watermolekules op in
      die plant in deur middel van kohesie en adhesiekragte om die watermolekules
      te vervang. ✓
      Kapillêre kragte: watermolekules trek mekaar aan beweeg op in ŉ dun
      buisie.✓                                                                        (2)
                                                                                      [9]

                                              5

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                                                     Physical Sciences / Fisiese Wetenskappe
                                  MEMORANDUM        (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 5 / VRAAG 5
5.1
      P1V1     =   P2V2       ✓
       T1           T2

      102 x 31,8 ✓        =   75 x 34.5 ✓
          302 ✓                 T2

          T2   = 240,91 K also accept / aanvaar ook - 32,09 ° C ✓                       (5)

5.2   As the temperature decreases the average kinetic energy of the molecule
      decreases.✓ pressure of the molecule on each other and on the sides of
      the container decreases as there will be fewer collisions.✓

      Soos die temperatuur verlaag sal die gemiddelde kinetiese energie van die
      molekules afneem ✓ die druk wat die molekules op mekaar en op die
      wande van die houer uitoefen sal verminder aangesien daar minder botsing
      sal wees.✓
                                                                                        (2)
5.3   5.3.1        It is a hypothetical gas that will obey all the gas laws under all
                   conditions of pressure and temperature.✓✓ (Two marks or none)

                   ŉ Hipotetiese gas wat al die gaswette nakom onder alle
                                                                                        (2)
                   omstandighede van temperatuur en druk.✓✓ (Twee of geen
                   punte)
      5.3.2           • Particles are in continual motion in all directions.
                      • Particles do not contribute to the volume of the gas.           Any 3
                                                                                        Enige 3
                      • There are no forces between the particles or the particles
                          and the wall of the container, except during collisions.
                      • Collisions are perfectly elastic with no loss of total energy
                          of the molecules.
                      • All molecules are identical.
                      • The temperature of the gas is a measure of the average
                          kinetic energy of the particles.
                      • Collisions of particles on the surface cause pressure.
                      • There is no motion and therefore no pressure at 0 K.

                      •   Deeltjies is konstant in beweging in alle rigtings.
                      •   Deeltjies dra nie by tot die volume van die gas nie.
                      •   Daar bestaan geen kragte tussen die deeltjies onderling en
                          die wande van die houer nie, behalwe gedurende botsings.
                      •   Botsings is volkome elasties met geen verlies aan die
                          totale energie van die molekules nie.
                                                6

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                                                 Physical Sciences / Fisiese Wetenskappe
                         MEMORANDUM             (Paper / Vraestel 2)   GRADE / GRAAD 11

                  •   Alle molekules is identies.
                  •   Die temperatuur van die gas is ŉ maatstaf vir die
                      gemiddelde kinetiese energie van die deeltjies.
                  •   Botsings van deeltjies op die oppervlak veroorsaak druk.
                  •   Daar is geen beweging en dus ook geen druk by 0 K.
                                                                                 (3)
      5.3.3    At high temperatures and low pressures✓✓

               Teen hoë temperature en lae druk. ✓✓                              (2)

5.4   22,4 dm3 at STP ✓✓

      22,4 dm3 by STP ✓✓                                                         (2)
                                                                                 [16]

                                            7

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                                                     Physical Sciences / Fisiese Wetenskappe
                            MEMORANDUM              (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 6 / VRAAG 6
6.1   Gay Lussac’s Law: ✓ The pressure of an enclosed gas is directly
      proportional to its temperature if the amount of a gas is at a constant
      volume.✓✓
      Gay Lussac se wet: ✓ Die verwantskap tussen druk en temperatuur van ŉ
      spesifieke hoeveelheid gas is direk eweredig aan mekaar mits die volume
      konstant gehou word.✓✓                                                           (3)
6.2   6.2.1      Pressure ✓✓
                 Druk ✓✓                                                               (2)
      6.2.2      Temperature ✓✓
                 Temperatuur ✓✓                                                        (2)
      6.2.3      Volume ✓✓
                 Volume ✓✓                                                             (2)
6.3   What is the relationship between the temperature and the pressure of an
      enclosed gas of a spesific volume?
      Wat is die verwantskap tussen die temperatuur en die volume van ŉ
      ingeslote gas by ŉ spesifieke volume?
       Criteria for investigative Question / Kriteria vir ondersoekende        Mark/
       vraag:                                                                  Punt
       The dependent and independent variables are stated.                     
       Die afhanklike en onafhanklike veranderlikes is genoem.
       Ask a question about the relationship between dependent and             
       independent variables.
       Vra ŉ vraag oor die verwantskap tussen die afhanklike en onafhanklike
       veranderlikes.                                                                  (2)

6.4   According to the graph the temperature is directly porportional to the
      pressure of the enclosed gas.✓✓ (As temperature increases, pressure
      increases.)
      Volgens die grafiek is die temperatuur en die druk van ŉ ongeslote gas direk
      verwant.✓✓ (Soos die temperatuur styg sal die druk ook toeneem.)                 (2)

6.5   Extrapolate the line: At zero pressure temp =  273 K. ✓✓
      Ekstrapoleer die lyn van die grafiek: By ŉ druk van Nul kPa sal die
      temperatuur =  273 K wees. ✓✓                                                   (2)
6.6   Absolute Zero ✓✓
      Absolute zero / nul ✓✓                                                           (2)

                                                8

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                                                   Physical Sciences / Fisiese Wetenskappe
                           MEMORANDUM             (Paper / Vraestel 2)   GRADE / GRAAD 11

6.7    Pi   Pf
       Ti = Tf    ✓                        Ti = 25 °C + 273
                                              = 298 K
       500      Pf                         Tf = 40°C +273
       298 ✓ = 313 ✓                           = 313 K
                                           Pi =500 kPa
                                           Pf = ?
       Pf   = 527,17 kPa ✓

      Yes, ✓he will reach his destination safely as the final pressure is less than
      the maximum pressure. ✓
      Ja, ✓ hy sal sy bestemming veilig bereik aangesien die finale druk kleiner is
      as die maksimum toegelate druk. ✓                                               (6)

                                                                                      [23]

                                              9

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                                                         Physical Sciences / Fisiese Wetenskappe
                                MEMORANDUM              (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 7 / VRAAG 7

7.1   Sodium carbonate ✓✓
                                                                                       (2)
      Natriumkarbonaat ✓✓
7.2              𝑚
            c=      ✓                           M = Na2CO3
                𝑀𝑉                                = 2(23) + 12 + (16 x 3)
                                 𝑚                = 106 g.mol-1
                0,25 ✓ =                    ✓
                           106 ✓ x 5𝑥10−1
                                                                                       (4)
                m = 13,25 g ✓

7.3         𝑚
      n=        ✓                                    Positive marking from 7.2
            𝑀
                                                     Positiewe nasien vanaf 7.2
                13,25
        =             ✓
                106

            = 0,125 mole of Na2CO3✓

      But in every 1 mole of Na2CO3 = 2 mole of Na ✓ /
      Maar in elke 1 mol Na2CO3 = 2 mol Na ✓

       0,125 x 2 = 0,25 mole Na ions / mol Na ione ✓
      

            𝑛
      c=
            𝑉

        =    0,25
              0,5

       = 0,5 mol . dm-3                                                                (6)

7.4.1 Na2SO4 + CaCO3 + 2✓C  Na2CO3 + 2✓CO2 + CaS                                      (2)

7.4.2 The substance that will be used up first ✓✓
      Die reagens wat eerste opgebruik sal word ✓✓                                     (2)

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                                                     Physical Sciences / Fisiese Wetenskappe
                              MEMORANDUM            (Paper / Vraestel 2)   GRADE / GRAAD 11

7.4.3     Na2SO4            CaCO3        2C          Na2CO3       2CO2   CaS
             1                1           2            1           2     1✓
          52,54 g            45 g
           𝑚              𝑚
        n=             n=     ✓
           𝑀              𝑀
            52,54           𝟒𝟓
          =       ✓      =     ✓
            142            𝟏𝟎𝟎
        = 0,37         = 0,45
         mole / mol    mole / mol✓
        But ratio :
          1
                         1
         Limiting     excess /
        reactant /     oortollig
        Beperkende
        reagens ✓                                                                  (6)

7.4.4 Na2CO3 M = (23 x 2) + (12) + (16 x 3) = 106 g.mol-1
        Mole ratio / Molverhouding: 1 Na2SO4   : 1 Na2CO3     ✓
            𝑚
        n=       ✓
            𝑀

        0,37 = m / 106 ✓
         m Na2CO3 = 39,22 g ✓                                                      (4)
                                                                                   [26]

                                               11

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                                                      Physical Sciences / Fisiese Wetenskappe
                                MEMORANDUM           (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 8 / VRAAG 8
8.1.   2 LiOH (s)  CO2 ( g )  Li2CO3 (s)  H 2O(l )
         ✓                  ✓             ✓              ✓                                    (4)
8.2          𝑚
       n=        ✓
             𝑀

         = 800
           24 ✓
                                                                                              (3)
        n = 33,33 mole / mol ✓
8.3    From balanced equation: LiOH        :   CO2 ✓             Positive marking from 8.2
       Vanaf gebalanseerde vergelyking:                          Positiewe nasien vanaf 8.2
                         Mole ratio / molverhouding 2        :      1   ✓
                               33,33 mole / mol : 16,67 mole / mol CO2 ✓
                                                                                              (3)

8.4          𝑚
       n=        ✓                                               Positive marking from 8.3
             𝑀
                                                                 Positiewe nasien vanaf 8.3

       16,67 ✓ = m
                     44 ✓

        m = 733,48 g ✓                                                                        (4)
                                                                                              [14]

                                                12

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                                                       Physical Sciences / Fisiese Wetenskappe
                          MEMORANDUM                  (Paper / Vraestel 2)   GRADE / GRAAD 11

QUESTION 9 / VRAAG 9
9.1       𝑚
      n=
          𝑀

           =    12
                342 ✓

       n = 0,035 mole / mol ✓
      In one mole of Al2(SO4)3     : 12 mole of O atoms✓ /
      In een mol van Al2(SO4)3      : 12 mol van O atome✓
            0,035 mole / mol x 12
               = 0,42 mole / mol O ✓
      Natoms = n x NA ✓
      Natome = 0,42 x 6,02 x 1023                                                    (6)
                = 2,53 x 1023 O atoms / atome ✓
9.2            Al                  S
               36%               64 % ✓
               36g                64g
               27                 32     ✓

                1,33                2
                1,33              1,33     ✓

                    1     :        1,5       ✓

      X2            2               3        ✓
          Emperical formula: Al2S3
           Empiriese formule                                                         (5)
9.3            6 H2O + Al2S3 → 3 H2S + 2 Al(OH)3
                 ✓                         ✓             ✓                           (3)
                                                                                     [14]
                                                                  TOTAL / TOTAAL: 150

                                                 13

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                                                                                Physical Sciences / Fisiese Wetenskappe
                                            MEMORANDUM                         (Paper / Vraestel 2)   GRADE / GRAAD 11

Taxonomy Grid
                                   Recall                Comprehension                Analysis                     Evaluation
                                Q no:    Mark            Q no:   Mark              Q no:    Mark                Q no:      Mark

                                  1.1           2          1.3             2         1.7            2            8.1              4

                                  1.2           2          1.4             2        1.10            2            9.2              7
                                  2.1           2          1.5             2         3.3            4            9.3              3
                                  3.1           4          1.6             2         3.5            2
                                  4.1           1          1.8             2         4.4            2
                                 5.3.1          2          1.9             2         4.5            2
                                 5.3.2          2          2.2             4         5.1            5
                                 5.3.3          2          2.3             6         5.2            2
                                  5.4           2          3.2             2         6.4            2
                                  6.1           3          3.4             4         6.5            2
                                 7.4.2          2          4.2             2         6.7            5
                                                           4.3             2         7.2            3
                                                           6.2             6        7.4.3           6
                                                           6.3             2         8.3            3
                                                           6.6             2         8.4            4
                                                           7.1             2         9.1            6
                                                           7.3             6
                                                          7.4.1            2
                                                          7.4.4            4
                                                           8.2             3

   Total mark                    16%         24         39,33%        59           34,67%      52               9,3 %             14
   Total % / 100%                 P1&2: 15%             P1:35% / P2:40%            P1:40% / P2:35%                 P1&2: 10%

Correct application of Bloom’s / Barrett’s Taxonomy:
Level 1: Recall of information (what? which? when? list ; label; name; define; give; describe)
Level 2: Understanding and using information (summarize; classify; apply rules; discuss)
             Applying information (distinguish; specify; compare; design; explain; investigate; interpret; calculate; give your
             input)
Level 3: Analysis of information (classify; explain; identify; interpret; compare; give reasons; prove; give causes and
             effects)
Level 4: Synthesize information (summarize; construct; argue; create; relate; design; formulate)
              Evaluate information (judge; assess; evaluate; choose; support; compare; estimate)

                                                                        14

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