# Physical Sciences Grade 10 P2 National Exemplar 2015 QP

> Grade 10 Physical Sciences Paper 2 question paper from the National Exemplar Exam 2015, 17 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/physical-sciences-p2/3c1543ca-ed88-4c40-a370-4bd4936cad72
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 10
- Document type: Question paper
- Year: 2015
- Exam period: National Exemplar Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 17

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## About this document

Physical Sciences · Grade 10 · National Exemplar Exam · 2015. Question paper, 17 pages. Read online or download the PDF.

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                                                          basiceducation
                                                          Department:
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                                                          REPUBLICOF SOUTHAFRICA

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                This question paper consists of 15 pages and 2 data sheets.

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  PhysicalSciences/P2                     z                        DBE/November
                                                                             20'15
                                    CAPS - Grade 10

 INSTRUCTIONS
            AN D INFORMATION

 1.       write your name and crass (for example10A) in the appropnatespaceson
          t he A N S WE RB OOK .

 2.       This qu,estion paperconsistsof TEN questions.AnswerALL the questionsin
          t he A N S WE RB OOK .

 3.       start EACHquestionon a NEW page in the ANSWERBooK.

 4.       Numberthe answerscorrectlyaccordingto the numberingsystemused in this
          questionpaper.

          Leave oNE line between two subquestions,for example between
          QUESTION 2 . 1 a n d e U E S T I O N2 . 2 .

          You may use a non-programmable
                                      calculator.

          You may use appropriatemathematical
                                           instruments.

          You are advisedto use the attachedDATASHEETS.

          show ALL formulaeand substitutions
                                           in ALL calculations.

          Roundoff your finalnumericalanswersto a minimumof TWO decimalplaces.

          Give briefmotivations,
                              discussionset ceterawhererequired.

         Writeneatlyand legibly.

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PhysicalSciences/P2                                     3                           D B E / N o v e m b2
                                                                                                       e r0 1 5
                                                   CAPS- Grade10

Q U ES T I O N1 : MU L T IP L E -C H O|CQUESTIONS
                                        E

Four options are provided as possible answers to the followingquestions.Each
question has only ONE correct answer. Choose the answer and write only the
le t t e r ( A- D ) n e xt to th e q u e sti o nn um ber ( 1.1- 1.10)in the ANSW ER BOOK, for
e x a m p l e1 . 1 1E .

1.1      I n w h ichON E o f th e fo l l o w i n globalsystem sar e all livingor ganism s
                                                                                        found?

         A       Biosphere

         B       Lithosphere

         C      Atmosphere

         D       Hydrosphere                                                                                      e)
1.2      D u r i nga n e xp e ri me n a
                                      t, g ro u pof lear ner sobser veice m eltingin a beaker .

         WhichONE of the followingbest explainsthe learners'observation?

         A      Th e i ce i s re l e a si n gh e a tener gy.

         B      T h e i ce i s u n d e rg o i n ag physicalchange.

         C      Th e i ce i s u n d e rg o i n ag c hem icalchange.

         D      The ice is decomposingintothe elementshydrogenand oxygen.                                         (2)

1.3      W h i c hON E o f th e fo l l o w i n igs a m ixtur e?

        A       Ai r

         B      A d i a mo n d

        C       Distilledwater

         D      So d i u mch l o ri d e                                                                           e)
1.4     T h e n u m b e ro f n e u t r o n isn a n a t o mo f i l t t a i s . . .

        A1

        B       11

        c12
        D23Q)

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PhvsicalSciences/P2
                                              A
                                                                            D B E / N o v e m b2
                                                                                               e r0 1 5
                                                  '10
                                       CAPS- Grade

1.5     Wh e na to mX o f a n e l e m entin Gr oup1 ionisesto becom eX' , the ' . '

        A     ma ssn u mb e ro f X incr eases.

         B    atomicnumberof X decreases.

         C    chargeof the nucleusincreases.

         D    numberof occupiedenergylevelsdecreases.                                                     (2)

1.6      Each of the substancesbelow is formed by attractiveforces betweentwo
         i o n s.

         l n w h i ch ON E o f th e substancesdo the constituentions have the s am e
         electronconfiguration?

         A     KBr

         B     NazS

         C     MgC{z

         D     CaClz                                                                                      (2)

1.7      In which ONE of the followingis the structurecorrectlylinkedto the given
         element?

               ELEMENT                STRUCTURE

         A     L i th i u m           Covalent

          B    lodine                 M olecular

          C    Sulphur                lonic

          D    Carbon                 M etallic                                                           (2)

 1.8     Wh i ch ON E o f th e followingbalancedequationsr epr esentsa diss oc i ati on
         process?

         A     K.(aq)+ C{-(aq)--- KCt(s)

         B     N a C t(s)- N a *(aq)+ Cf( aq)

         C     Zn(s) + 2HCt(aq)---+
                                  ZnCtz(aq)+ Hz(9)

          D                                           + AgCt( s)
                                           - NaNO:( aQ)
               N a C l (a q )+ A g N Os( aQ)                                                              (2)

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PhvsicalSciences/P2                          6                            D B E / N o v e m b 2e r0 1 5
                                      CAPS- Grade10

1.9                                                    1 m oleof a substance?
        W hi chON E o f th e fo l l o w i ngr epr esents

        A     1 6 g o xyg e ng a s

        B     2ghydrogengas

        C     22,4 dm3copper

         D    22,4 cm3nitrogengas                                                                         (2j

1.10                     fo rmu l ao f a cer taincar boncom poundis CHzO'
        T he e mp i ri ca l

                                                                 for m ulaof thiscom pound?
         W hi chON E o f th e fo l l o w i ngcan be the m olecular

         A    CzHoO

         B    CgHoO

         C     CzHqOz

         D    CzHoOz                                                                                      (2)
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     PhysicalSciences/P2                               6                                          D B E / N o v e m b2
                                                                                                                     e0r 15
                                                  CAPS- Grade10

     QUESTION2 (Starton a new Page.)

                                                          in the tableklelow.
     G r a d e1 0 l e a rn e rsw e reg i ve nthe substances

             brass                 sa n d         oxygengas         sugar                    car bondioxide
             copper            purearr            saltsolutr on I tablesait                m a q n e s l u mc x l o e

     2.1       Fromthe abovetable,writedown:

              2.1.1        An element                                                                                         (1)

               2.1.2       A h o m o g e n e o ums i x t u r e                                                                (1).

                           A d i a t o m ig
                                          cas                                                                                 (1)
               2.1.3
                                                                         'C                                                   (1)
               2.1.4                w h i c hi s a s o l i da t 2 5
                           A compound

               2 .1 .5                       nr ixtur e
                           A h e te ro g eneous                                                                               (1)

     2.2       The learnersperforman experimentto separatea mixtureof sand and sugar.
               T h e e xp e ri me ni ts d o n ein thr eesteps,as shownin the diagr am sbelow.

                                                                              S o l i dX

           "::;;MffiO                                                                                 +
                                                                                                      lH'oig)
                                                                                               \-J
                                                                          lVixtureY              \-il--Mixture           Y

                           Step 1                                Step2                            Step 3

               2.2.1       Writedown the nameof:

                           (a)                            in step 2
                                     The processillustrated                                                                   (1)

                            (b)                           in step 3
                                     The processillustrated                                                                   (1)

                            (c)      S o l i dX                                                                               (1)

                            (d )     Mi xtur eY                                                                               (1)

               2.2.2        l s ste p 3 a CHEM ICALor PHYSICALpr ocess?Give a r eas onfor
                            the answer.                                                                                       ( 2)
                                                                                                                              [ 11 ]

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PhvsicalSciencesiP2                                  7                                 2015
                                                                             DBE/November
                                                           '10
                                                CAPS- Grade

Q U E S T I ON3 (S ta rto n a n e w P age.)

3.1                                                                              A to D.
         T h e ta b i eb e l o wsh o w sthe boilingand m eltingpointsof substances

                                           BOILINGPOINT          M ELTINGPOINT
                  SUBSTANCE                         ('c)             ('c)
                       A                             7B              - 117
                       B                            444               133
                       c                           _1BB              -220
                       D                            184               90

         3.1.1        Definethe term boitingpoint.                                                 (2)

         3.1.2        From the above table, wnite down the LETTER (A-D) that
                                                 whichis a:
                                    th e substance
                      re p re se n ts

                      (a)        L i q u i da t 1 0 0" C                                           (1)

                                                   'C                                              (1)
                      ib)        S o l i da t 1 0 0

                      (c)        Ga s a t 25 "C                                                    (1)

          3.1 3       Wh i ch ON E of the followingdiagr am sr epr esentsthe PART IC LE
                      A R R A N GE MENT of substanceA at - 120' C? W r itedownonlyI, II
                      or lii.
                            T
                            .t

                                                                                                   (1)

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                                           B                                      2 r0 1 5
                                                                        DBElNovembe
PhvsicalSciences/P2                             '10
                                      CAPS- Grade

3.2     The heatingcurveof a substanceis shownbelow'

        o
        o

        (g
         o
         o.
         (u

                                         Tim e( m inutes)

                                                                    =                        (1)
            3.2.1     Writedownthe physicalstateof the substanceat t 1 5 m i n u t e s .
                                                                                             (1)
            3.2.2     Wh a t i s th e boilingpointof the substance?

            3,2.3     How will the average kinetic energy of the particles of the
                      substancebe affectedbetween:

                      (Wri ted o w n only INCREASES,DECREASESor R E M A I N ST H E
                      SAME.)

                                 t = 0 m inutesand t = 5 m tnutes                            (1)
                      (a)

                      (b)        t = 5 m inutesand t = 10 m inutes                              (1)

             3.2.4    Referto the kineticmoleculartheoryto fully explalnthe answerto
                                 3.2.3(b).                                                      (3)
                      QUESTION
                                                                                                t13

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PhvsicalScienceslP2
                                                       q                           D B E / N o v e m b2
                                                                                                      e r0 ' 1 5
                                                CAPS- Grade10

QUESTION4 (Start on a new Page.)

C h l o r i n ei s a n o n -me ta l l iec l e mentwith an atom tcnum berof 17 and can exis t
isotopes.

4.1      De fi n eth e te rm:

         4.1.1         A t o m i cn u m b e r                                                                      {2)

         4.1.2          lsotoPe                                                                                    tt)

4.2                i l o ri n eco n si stsof C&35and Cl- 37.
          N a tu rach

          4 .2 .1                                    for Ct- 37.
                        Wri ted o w nth e sp- notation                                                             (2)

          4 .2 .2       T l re re l a ti ve atom ic m ass of chlor ine is 35,5. Calculatethe
                        p e rce n ta g oe f Ct- 35in natur alchlor ine'                                            {3)

4.3                                         t sf m o l e c u l e s '
                 e a s ( C t 2 ) c o n s i so
          Chloring

          Writedownthe:

          4.3 .1        N u mb e ro f va lenceelectr onsin a chlor ineatom                                         (1)

                                                                                                                   (1J
          4 .3 .2       T yp eo f b o n d ingin chlor inem olecules

          4 .3 .3                          for the chlor inem olecule
                        L e w i sstru ctur e                                                                       (?)

4.4       C a l ci u mre a ctsw i thch i or ineio for m calciur nchior ide"

          4 .4 .1       D ra wth e A u fbaudiagr amfor a calciumion.                                               (3)

          4.4.2         Write clown the chemicalsymbols of the particlesfound in
                        ca l ci u rnch l o r idecr ystal( lattice) .                                               tlJ
                                                                                                                   ll sl

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                                                        10                                                D B E / N o v e m b2
                                                                                                                             e0r 15
    PhysicalSciences/P2
                                                    CAPS- Grade10

    QUESTION5 (Start on a new Page')

    5.lThefirstionisationenergyandthee|ectronaffinityofthepericd3e|ements
           are shownin the tablebelow'

                                             FIR,ST                               ELECTRONAFFiNITY
                ELEMENT                IONISATIONENERGY                               (kJ'mol-')
                                                  (kJ'moIL-                                                    4

                                                                                                   6?
               Sodium                                     496                                             --
                                                          738                                       0
               Ma g n e si u m                                                                     AA
                                                                                                   ++
               Aluminium                                  578
                                                                                                  42r',
               S i l i co n                               786                                      IJT

                                                                                                   7)
               P h o sp h o ro u s                    1012                                          I L

                                                                                                  o nn
                                                                                                  avv
               Sulphur
                                                      I
                                                       000I

                                                                                                   r49
               C h l o ri n e                  __1291 _-__                                            n
                                                                                                      U
               Argon                                  1 521

              5.1.1        E x p | a i n t h e d i f f e r e n c e b e t w e e n i o n i s a t i o n e n e r g ' y , a l d e l e c t r a tn' Z )
                           affinity.
                                                                            energyas shown
              5.1.2        Give a reasonfor the trend in the first ionisation                                                               (1)
                           i n th e ta b l e.
                                                                                        tc that
                                                                               cor npar a'
                                                               ener gyof soclium
              5.1.3        H o w w i l lthe sECONDionisation
                                                                              LOW ERT H Ai { or
                           o i r" g n " ri um f W iite downonlyHIGHERTHAN'                                                                  i?\
                           E QU A LT O. ExPlainthe answer '
                                                                           46                                      g of i'la(g)'            (3)
              5.1.4        calculatethe energythat will be needeclto ionise
                                                                       greatesttencencvto
               5.1.5       which oNE of the above erementshas the
                                                                            to give a reitson
                           frornnegativeions? Referto the data in the table                                                                  /?\
                           for the answer.

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                                                              11                                              D B E / N o v e m b 2e r0 1 5
PhvsicalSciencesiP2
                                                         CAPS - Grade 10

5.2          Studythe substances(A-E) in the table belowand answerthe questionsthat
             follow.

                                                          SUBSTANCE
                                            A        S ulphurpowder
                                             B       Sodiumchloridecrystals
                                             c       Copperwire
                                             D       COz(s)[dry ice]
                                             E       A diamond

             5 2.1            Writedownthe LETTER(S)that represent(s):

                              (a)       A substancewith a giantatomiclattice                                                                  (1)

                              (b)       A substancewith a latticeconsistingof positiveions and
                                                  valenceelectrons
                                        delocalised                                                                                           (1)

                              (c)        TWO substances with intermolecularforces between
                                         particles                                                                                            (2)

                               Use Lewisstructuresto showthe formationof substanceB.                                                          (4)
              5.2.2

              5.2.3                                                  Repr esenthis change
                               su b sta n ceD u nder goesSUBLIM ATION.
                               w i tha ch e mi ca lequation.                                                                                  (2)
                                                                                                                                              121l

 QUESTION 6 (Start or! 3 h€\tv'paEe.)
                                                                                                     p r o d u c ea w h i t e s o l i d ,
 M a g n e s i u mr i b b o n b u r n s i n o x y g e n w i t h a b r i g h tw h i t e f l a m e t o
         c l xi d e ,
 magnesium

 6.1           N a m eth e typ eo f ch e mi calbondingin:

                               M a g n e s i u rmi b b o n                                                                                    (1)
               6.1.1

                               l V l a g n e s r uom
                                                   xide                                                                                       (1)
               6.1.2

 6.2           i s th e re a cti o nb e tw e e nmagnesiumr ibbon and oxygen a PHYSICALor
                                                                                                                                              ( 2)
               C HE MIC A Lch a n g e ?Gi vea r easonfor the answer '

 6.3           W r i te d o w n a b a l a n ce de quationfor the r eactionbetweenmagnesiumand
                                                                                                                                              ( 3)
               o x yg e n .

 6.4           Use the law of conservation        of mass to show that mass is conservedduring
                                                                                                                                               (4)
               t h e re a cti o inn QU E S T ION6.3"
                                                                                                                                               t 11 l

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                                           12                                        2015
                                                                           DBE/November
PhvsicalSciences/P2
                                       CAPS- Grade10

QUESTION7 (Start on a new Page.)
                                                   acid, HCl, accordingto the
Calciumcarbonate,CaCO3,reactswith dilutehydrochloric
followingbalancedequation:

                                          CaCt2(aq)+ COz(g)+ HzO(t)
                     CaCOs(s)+ 2HCl(aq)'--+

7.1         The above reactionis an exampleof an acid-basereaction.Definethe term
            acid-basereaction'
                                                                                                 (2)

                                                   betweenthe volum eof car bondioxidegas ,
T h e g r a p hb e l o wsh o w sth e re l a tionship
C O z ( g )f o r me da n d th e ma sso f P UREcalciumcar bonate'

        E
       l)
        N

       o
       ()

       o
       E
       5
       6

                                          Massof CaCO3(g)

 7.2        F r o m th e g ra p h ,d e te rminethe volum eof CO2( g)pr oducedwhen 0' 0729 of
                                                                                                   (1)
            PU R EC a C Og (s)re a cts.

 7.3        A ce rta i na n ta ci dta b l e t,with a m ass of 0,25g, containsm ainly cal c tum
            carhronatewhich reacts with dilute hydrochloricacid in the stomach to
            producecarbondioxidegas.
                                                                                      3'
                                                     ic in the stom achis 0,1 m ol' dm
            T h e co n ce n tra ti oonf h ydr ochlor acid

             7.3.1                                 of a solution'
                        Definethe term concentration                                               (2)

             7.3.2      lt is found thaI25 cm3of COz(g)is formedwhen one antacidtablet
                        comPletelY    reacts'
                        Use the informationin the graph and calculatethe percentage
                        C a C Oe (s)i n o ne antacidtablet'                                        (3)

             7.3.3                                                                  by
                                                         acidthat will be neutralised
                        Calculatethe volumeof hydrochloric
                        ON E a n ta ci dtablet.                                                    ( 5)
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PhysicalSciences/P2                             13                                   DBE/November
                                                                                               2015
                                            CAPS- Grade10

QUESTION8 (Start on a new page.)

8.1     Many chemicalreactionstake place in aqueoussolutions.Definethe term
        aqueoussolution.                                                                                  (1)

8.2      lonicsolidsdissociatewhen dissolvedin water.

        8.2.1         Definethe term dissociation.                                                        (2)

        8.2.2         Write down a balancedequationfor the dissociation
                                                                      of ammonium
                                    (N
                      ca rb o n a te , Ha) 2COs,
                                              in water .                                                  (3)

8.3     The experimentalsetup below is used to comparethe electricalconductivity
        o f a ca l ci u mch l o ri d eso lution,CaCl2( aq) ,and a sodiumchlor idesoluti on,
        NaCf(aq).The concentration          of each solutionis 0,5 mol'dm-3.

        The CaC{z(aq)is added drop by drop to water and the ammeterreadingis
        recordedafterthe additionof each drop.The procedureis then repeatedwith
        the NaCl(aq).The resultsare shownin the tablebelow.

                    NUMBER
                         OF                  AMMETERREADING(mA)
                    DROPSOF
                                              CaG€2(aq)                   NaC€(aq)
                    SOLUTION
                       0                         0.18                      0.18
                             1                   0.55                      0,34
                             2                   0.92                      0,55
                             3                   1.29                      0,74
                             4                   1.47                      0,92
                             5                   1,84                       1,1
                             o                   2,21                       1,29
                             7                   2,39                       1,47

         8.3.1        l d e n ti fyth e :

                      (a )                    var iable
                                 D e p e n dent                                                           (1)

                      (b)        Independent
                                           variable                                                       (1)

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                                               14                                  D B E / N o v e m b2
                                                                                                      e0r 15
PhysicalSciences/P2
                                           CAPS- Grade10

         g.3.2          From the results, deduce the relationshipbetween the ion
                                    in a solutionand its conductivity'                                         (1)
                        concentration

         g . 3 .3       U se b a l a n ce dchem icalequationsto explainwhy CaCt2( aq)is a
                                              than NaCt(aq).                                                   ( 4)
                        strongerelectrolyte

8.4      Indicatethe type of reactionrepresentedby each of the followingequations'
                                               REDOXor GAS FORM ING.
         W r ited o w no n i yP R E C IP ITATION,
                                             - - - Cu( s)+ ZnSO+ ( aQ)                                         (1)
         8 . 4 .1       Z n (s)+ C u S O+( aq)
                                                                                                               (1)
         8 . 4.2        Z n (s)+ Z H C t(a q)- - +Znct2( aq)+ Hz( g)
                                                                                                               (1)
         8 . 4 .3       N a zC Oa (a q+) B actz( aq)- - - 2NaCt( aq)+ BaCO:( s)

g.5      Writedown a balancedchemicalequationfor the followingword equation:
                                                                                                               (3)
                    Nitricacid + copper-+ copper(ll)nitrate+ water+ nitrogendioxide
                                                                                                               llel

QUESTIONI            (Start on a new Page.)

 9.1     H y d ro g e n ,H z(g ), a n d n itr ogen,Nz( g) , r eact to for m am m onia,NHs ( g) .
         The reactionthat takesplaceis representedby the followingequation:

                                         N z ( g )+ 3 H z ( 9 -) ' 2 N H s ( g )
                                                                                                                ( 2)
          9 . 1 .1      D e fi n eth e te rm 1 m ole.

          g . 1.2        H o w ma n y mo les of am m oniawill be pr oducedfr om 1 m ole of
                                                                                                                ( 1)
                         h yd ro g e ng a sZ

          g . 1.3        In i ti a l l y1 0 cm3of nitr ogenand24 cm 3of hydr ogenar e m ixedin a
                         container.The temperatureand pressureremainconstant.

                         C a l cu l a teth e volum eof gas that will r em ainin the containerafter
                                                                                                                (4)
                         the reactionis comPleted'
                                                                      gas to form
          In anotherexperiment,80 g of hydrogengas reactswith nitrogen
          a m rn o n l a .

           Calculatethe:

                         N u mb e ro f mo l esof hydr ogengas r eacted
                                                                                                                (2)
           9 .1 .4
                                                                                                                 (2)
           9 .1 .5       V o l u meo f th e nitr ogengas usedat STP
                                                                                   of
  g.2      When 207 g of lead, Pb, combineswith oxygen,239 g of.a certainoxide
                    - j - - Use a calculationto determinethe formula of this oxide of
           lead is formed.
                                                                                                                 (5)
           lead.
                                                                                                                 t16I
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PhysicalSciences/P2                              t3                         D B E / N o v e m b2
                                                                                               e r0 1 5
                                         CAPS- Grade10

Q U E S T I O N1 0 (S ta rto n a n e w P age.)
-l'he
       water cycie in the diagram below links the hydrosphereto the other global
systerns.The lettersP, Q, R and S indicatesome of the processeswhichtake placein
t h e w a t e rc vci e .

10.1      Brieflyexplainthe term hydrosphere.                                                             (1)

1 A. 2    N ameth e p ro ce sse lsa b e lled:

          1A.2.1       P                                                                                  (1)

          1A.2.2       0                                                                                  (1)

          1 0 .2 ..3   R                                                                                  (1)

          1 0 .2 .4    S                                                                                  (1)

10.3      Writedown ONE advantageof processR.                                                             (1)

1C.4      T h e b u i l d i n g o f d a ms has sever al advantaEesfor hum ans and the
          environrnent.      StateTWO of theseadvantaEes.                                                 (2)
                                                                                                          t8I
                                                                                       TOTAL:             150

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PhvsicalSciences/P2                                                                  DBE/November
                                                                                               2015
                                               CAPS- Grade10

                                DATAFORPHYSICAL       GRADE1O
                                               SCIENCES
                                      PAPER2 (CHEMISTRY)

                                                     GRAAD10
                        GEGEWENSY'R F'S'ESEWETENSKAPPE
                                  VRAESTEL2 (CHEM|E)

                                        KONSTANIES
                           BEL 1: FTSIESE
TABLE1: PHYSICALCONSTANTS/IA

           NAME//VAAM                     SYMBOL/SIMBOOL          VALUEIWAARDE
S t a n d a r dp r e s s u r e                     p"          1, 0 1 3x 1 0 ' P a
Standaarddruk
M o l a rg a s v o l u m ea t S T P
                                                  v,,n         22,4 dm3'molj
Mol)re oasvolumebv STD
Standardtemoerature
                                                   TE          273K
Standaardtemperatuur
Chargeon electron                                              - 1, 6 x 1 0 - 1C
                                                   e                           e
Ladinq op elektron

                    2: FORMULES
TABLE2: FORMULAEITABEL

    m                                                   N
n ---                                             n=-
    M                                                   NA

     n                    ffi                        V
            oR     c=                             n-_
     V                  MV                              v,

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