# Physical Sciences Grade 11 Paper 2 KZN November 2023 Memo

> Grade 11 Physical Sciences Paper 2 memorandum from the KZN November Exam 2023, 25 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/physical-science-grade-11-november-2023-p2-and-memo/74e58427-5c59-4ac2-80aa-52208797b7ac
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 11
- Document type: Memorandum
- Year: 2023
- Exam period: KZN November Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 25

Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 11](https://www.hlayiso.com/library/grade-11) › [Physical Sciences](https://www.hlayiso.com/library/grade-11/physical-sciences) › [Physical Sciences Grade 11 Paper 2 KZN November 2023 Memo](https://www.hlayiso.com/library/physical-science-grade-11-november-2023-p2-and-memo/74e58427-5c59-4ac2-80aa-52208797b7ac)

## About this document

Physical Sciences · Grade 11 · KZN November Exam · 2023. Memorandum, 25 pages. Read online or download the PDF.

Read it free online on the page above; download the PDF from there.

## Document text

Text extracted from the PDF. Layout, diagrams and tables may not survive extraction.

### Page 1

Downloaded from hlayiso.com

               KWAZULU-NATAL PROVINCE
               EDUCATION
               REPUBLIC OF SOUTH AFRICA

                                      NATIONAL
                                 SENIOR CERTIFICATE

           �--------------------
      ,.
                                                              TRY)

                                      N

      ,                                                                              �
      �
           ��---------------------------------------------�                         �

 MARKS:       150

 TIME        3 Hours

                This question paper consists of 13 pages and 4 data sheets.

Copyright reseNed                                                       Please turn over

### Page 2

Downloaded from hlayiso.com
Dosa koades2from Stanmoreph Si@S.COM November 2023 Examination

INSTRUCTIONS AND INFORMATION

i. Write your centre number and examination number in the appropriate spaces
on the ANSWER BOOK.

25 This question paper consists of NINE questions. Answer ALL the questions in
the AN R BOOK.

3. Start 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.

7s You may use appropriate mathematical instruments.

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

9. Show ALL formulae and substitutions in ALL calculations.

10. Round off your final numerical answers to a minimum of TWO decimal places.
11. Give brief motivations, discussions et cetera where required.

i2: Write neatly and legibly.

Copyright reserved Please turn over

### Page 3

Downloaded from hlayiso.com
PhysicADsueutemeled from Stanmoreph 'SicSs.com November 2023 Examination

QUESTION 1: MULTIPLE-CHOICE QUESTIONS

Various options are provided as possible answers to the following questions. Choose
the answer and write only the letter (A-D) next to the question number (1.1 to1.10) in the
ANSWER BOOK, for example 1.11 D.

Ui Which of the following statements is CORRECT for an ENDOTHERMIC
REAC ?
A mperature of the surrounding increases.

The enthalpy change for the reaction is negative.

B
C Heat flows from the surroundings into the system.
D

The enthalpy of the products is less than the enthalpy of the reactants. (2)
1.2 Two different gases, occupying the same volume at STP, will have the same...
A mass.

B mass to volume ratio.
C molar mass.
D number of molecules. (2)

13. Which of the following statements best describes a POLAR COVALENT BOND
between two atoms?

A Aband of delocalised electrons attract the nuclei of the two atoms.
ut

hared unequally between the two atoms.

electronegativity between the two atoms is zero.

0 Oo DB

ansferred from the less electronegative atom to the more
om. (2)

Copyright reserved Please turn over

### Page 4

Downloaded from hlayiso.com
Physicsuentoneded from Stanmoreph SiCS.COM November 2023 Examination

1.4 The energy changes represented by X, Y and Z on the potential energy graph
below takes place during a catalysed, reversible chemical reaction.

Potential energy (kJ)

Course of reaction

Which ONE of the following represents the heat of the reaction for the
FORWARD reaction?

A Y-Xx
B Y-Z
é 2Z-«
D X-z (2)

15 The shape of the PCfs molecule as predicted by the VSEPR theory is ...
A _ tetrahedral.
B trigonal planar

C trigonal pyramidal.

eo]

trigonal bi-pyramidal. (2)

Copyright reserved Please turn over

### Page 5

Downloaded from hlayiso.com

PhysiciDsuewtsmeled From Stanmorephysics.com _ November 2023 Examination
NS

1.6 The sketch shows two containers, X and Y, connected by a tube containing a
closed stopcock.

stopcock

The volume of container X is V and contains a gas at a pressure p. Container Y
is evacuated. The volume of the tube is negligible.

When the stopcock is opened at constant temperature the pressure of the gas

in container X changes to 3.

What is the volume of container Y?

af
A 3”
2
=V
B 3
Cc & Vv
4
D 4 Vv
3 (2)
1:7 Consider the reaction represented by the balanced equation below:
HsPOa(aq) + H2O0(t) — HsO*(aq) + H2POs¢(aq)
Which ONE of the following is a conjugate acid-base pair?
A H3POa(aq) and H2zPOa- (aq)
B —_HsO0*(aq) and H2PO¢ (aq)
C — HsPOa(aq) and H2O(2)
D ~—_HsPOa(aq) and H3O*(aq) (2)

Copyright reserved Please turn over

### Page 6

Downloaded from hlayiso.com
Physicsuentoneded from Stanmoreph SiCS.COM November 2023 Examination

1.8 The number of ions present in 5 moles of aluminium oxide, Af2Os, is given by...
A 10x 6,02 x 107°
B 5x6,02 x 103
C  254Kl6,02 x 1028

D 02 x 1078
a (2)
1.9 In which ONE of the following reactions is HCf the REDUCING AGENT?
A HCf(aq) + H2O0(t) — HsO*(aq) + Ch
B NHsa(aq) + HCf(aq) — NHaCf(aq)
Cc MnO2(aq) + 4HCf(aq) — MnCk(aq) + H2O0(f) + Cfha(g)
D CaCOs(s) + 2HC£(aq) — CaCte(aq) + H20(%) + CO2(g) (2)
1.10 Consider the following reactions of a metal P:
(i) P reacts with a solution of silver nitrate to form a deposit of metallic
silver.
(ii) P does not react with a solution of zinc sulphate.
Which ONE of the following statements is CORRECT for reactions (i) and (ii)?
A P is a reducing agent in both reactions.
B P is an oxidising agent in both reactions.
Cc P is an oxidising agent in reaction (i) only.
D P is a reducing agent in reaction (i) only. bed

Copyright reserved Please turn over

### Page 7

Downloaded from hlayiso.com
Physicsuentoneded from Stanmoreph SiCS.COM November 2023 Examination

QUESTION 2 (Start on a new page.)

The letters A to F in the table below represent six covalent molecules.

MOLECULE fiz7 A B Cc D E F
FORMULA /D/i9/ H2O NH3 HF OF 2 HOC? HCN
2.1 Define the télm lone pair of electrons. (2)

2.2 Draw Lewis structures for the following molecules:
2.2.1 H20 (2)
2.2.2 HOCE (2)

2.3. For molecule A, write down the:
2.3.1 | Number of bonding pairs of electrons. (1)
2.3.2. Number of lone pairs of electrons. (1)

2.4 Consider the bond between the O and the H atoms in molecule A, and that
between the O and the F atom in molecule D. Which of these two bonds, O-H or

O-F, is more polar? Give a reason for the answer. (3)
2.5 What is the shape of molecule A? (1)
2.6 Write down the letter of the molecules that has the same shape as molecule A. (1)

2.7 Refer to the polarity and intermolecular forces of A and B to explain why
molecule B is soluble in molecule A. (2)

2.8 The results in the table below were obtained during an investigation to determine
the values of the bond length of the different bonds in molecule F (HCN).

BONDING ATOMS BOND LENGTH (nm)
CandH 0,109
CandN 0,116
2.8.1 Define bond length. (2)
2.8.2 Explain why the bond length for the bond between the C and N atoms is
longer than the bond length between the C and H atoms. (2)
2.8.3. What is the bond order for the bond between the C and N atoms? (2)
[21]

Copyright reserved Please turn over

### Page 8

Downloaded from hlayiso.com

PhysiciDsuewtsmeled from Stanmorephysics.com _ November 2023 Examination
NS

QUESTION 3 (Start on a new page.)

During an investigation, the BOILING POINTS of the hydrides of two group VI elements
were determined.The results of the investigation are shown in the table below.

3.1

3.2

3.3

3.4

3.5

3.6

3.7

elt Compound Formula Boiling Point (°C)

mae P H2S Xx

saa] Q H20 100
Define boiling point. (2)
Write down the dependent variable for this investigation. (1)

Write down the name of the strongest intermolecular forces that exist between
molecules of:

3.3.1 P (1)
3.3.2 Q (1)
Will the value X, in the table be EQUAL TO, LESS THAN or GREATER THAN 100

°C? (1)
Fully explain the answer to QUESTION 3.5. (2)

The boiling point of the hydride of a third group VI element, Se, is now determined.
Will the boiling point of HaSe be EQUAL TO, LESS THAN or GREATER THAN
that of H2S? Give a reason for the answer. (2)

Will the boiling point of ammonia (NHs), be EQUAL TO, LESS THAN or
GREATER THAN 100 °C? Fully explain the answer. (4)
[14]

Copyright reserved Please turn over

### Page 9

Downloaded from hlayiso.com
PhysicADsueutemeled from Stanmoreph SicS.cOom November 2023 Examination

QUESTION 4 (Start on a new page.)

4.1 The relationship between pressure and volume of an enclosed gas at 25 °C is
investigated, by varying the pressure exerted by the gas, and observing the
correspon volume occupied by the gas in each case.

The resul ained are shown in the table below:
fal
RESSURE (kPa) | Volume in cm? 3 in cm?
60 50 0,020
D 35 0,029
100 30 0,033
150 20 0,050
200 15 0,067
4.1.1 NAME and STATE the gas law being investigated. (3)
4.1.2 | Write down TWO controlled variables for this investigation. (2)
4.1.3 Write down the dependent variable for this investigation. (1)

4.1.4 Use the results in the table to explain why a graph of pressure(p) versus

the inverse of volume ( ) will be a straight line graph.

(3)
4.1.5 Calculate the value represented by the letter D in the table. (2)
4.2 The graphs, A and B below were obtained during an investigation to identify the
conditions under which a gas will deviate from ideal gas behaviour.
Pressure
4.2.1. Which graph, A or B represents the deviation from ideal gas behaviour? (1)
4.2.2 State the relevant condition under which the deviation from ideal
behaviour referred to in QUESTION 4.2.1 occurs. (2)
4.2.3. Explain the answer to question 4.2.2. (3)
[17]

Copyright reserved Please turn over

### Page 10

Downloaded from hlayiso.com

PhysiciDsuewtsmeled from Stanmorephysics.com November 2023 Examination
NS

QUESTION 5 (Start on a new page)

The balanced equation below represents a hypothetical reaction:
x) + Y(Q) > XY(9)

The table. w shows the different energies for the above reaction.

——t, | Energy of the Reactants (Er) | 351 kJ.mol?
Energy of the Products (Ep) 109,2 kJ.mol+
Activation energy (Ea) 1370 kJ.mol*

5.1 Is the above reaction EXOTHERMIC or ENDOTHERMIC?
Give a reason for the answer by referring to the data in the table.

5.2 Calculate the heat of reaction for the above reaction.

5.3 Define the term activated complex.

5.4 Sketch a potential energy versus course of reaction graph for the above reaction.
The graph need not be drawn to scale. Clearly label the axes and indicate the
following numerical values on the Y-axis.

e Energy of the reactants
e Energy of the products
e Energy of the activated complex

5.5 The following reaction NOW takes place:

XY(g) > X(g) + Y(g)
For the above reaction write down the value of the:

5.5.1 Heat of reaction.

5.5.2. Activation energy.
QUESTION 6 (Start on a new page)
A compound contains 30,4 % nitrogen and 69,6 % oxygen by mass.
6.1 Define the term empirical formula.

6.2 Determine the empirical formula of the compound.

6.3 Write down the molecular formula of the compound if the molecular mass of the
compound is 92 g.mol?.

(2)
(3)
(2)

(5)

(1)
(2)

[15]

(2)
(5)

(2)
[9]

Copyright reserved Please turn over

### Page 11

Downloaded from hlayiso.com
Physicsuentoneded from Stanmorephysics.com November 2023 Examination

QUESTION 7 (Start on a new page.)

A sample of IMPURE solid calcium carbonate, CaCOs, of mass 12,5 g reacted with dilute
£(aq), according to the following balanced equation:

8) + 2HCL(aq) > CaCh(aq) + CO2g) + H2O(2)

The graph belobrstiows how the mass of the HCf£(aq) changes with time.

4
20
S
(3)
=
‘%5 12,7
n
wn
ij
=
Time(s)
7.1 Define the term limiting reagent. (2)
7.2 Write down the name or formula of the limiting reagent in the above reaction. (2)
7.3. Calculate the: (1)
7.3.1 Percentage purity of the calcium carbonate. (6)
7.3.2 Maximum volume of CO2(g) produced at STP (4)

In another reaction, X g of the SAME IMPURE CaCOs is now reacted with excess HCE.
7.3.3 Calculate the mass of the impure CaCOs that must be used to produce

12,6 g of H20. (5)
[20]

Copyright reserved Please turn over

### Page 12

Physicsuvmteneded from Stanmorephysics.com November 2023 Examination
NS

Downloaded from hlayiso.com

QUESTION 8 (Start on a new page.)

8.1

8.2

8.3

8.4

8.5

Copyright reserved

Oxalic acid ionizes in water according to the following balanced equation:
C2O4(aq) + 2 H2O0(2) = C204 (aq) + 2 H30*(aq)

8.1.1 an acid according to the Arrhenius theory.

8.1.2 ite: down the formula of the TWO BASES in this reaction.
Sulphuric acid, H2SOs, ionizes in TWO steps as follows:
STEP [ H2SO4(aq) + H20(2) — HSO;(aq) + Hs0*(aq)
STEP Il: HSO;(aq) + H20(t) > SO2 (aq) + HsO0*(aq)
N E or FORMULA of the substance that acts as an ampholyte
5. Give a reason for the answer.
es according to the following equation:
HF(aq) = H* (aq) + F (aq)

When a 0,10 mol.dm* solution of HF is prepared, it is found that the concentration
of the F- ions at 25 °C is 0,018 mol.dm*.

ls HF a strong acid? Choose from YES or NO. Give a reason for the answer.

The salt sodium ethanoate (CHsCOONa) is formed when a weak acid reacts with

a strong base.

Write a balanced chemical equation for the neutralisation reaction between an

acid and a base that will form CHsCOONa.

HBr(aq) reacts with Zn(OH)2 according to the following balanced equation:
Zn(OH)2(s) + 2HBr(aq) — ZnBra(aq) + 2 H2O0(t)

X grams of pure Zn(Oh)2(s) is reacted with 90 cm? of HBr(aq) of concentration
0,45 mol.dm*.

The excess HBr(aq) is then completely neutralised by 16,5 cm? of NaOH(aq) of
concentration 0,5 mol.dm’, according to the following balanced equation:

HBr(aq) + NaOH — NaBr(aq) + H2O(£)

Calculate X.

(2)
(2)

(3)

(3)

(3)

(9)
[22]

Please turn over

### Page 13

Downloaded from hlayiso.com
Physicsuentoneded from Stanmorephysics.com November 2023 Examination

QUESTION 9 (Start on a new page.)

The reaction between potassium permanganate (KMnOs) and hydrogen sulphide(H2S)
in an acidic medium is given below.

DO
Ou! + H2S + HCL > KC£ + MnCk + S + H20

9.1 Define the te¢m oxidation in terms of electron transfer. (2)

KM

9.2 Write down the:

9.2.1. Name or formula of the reducing agent. Explain the answer by referring to

the oxidation numbers. (2)
9.2.2 Name or formula of the substance that is reduced. (1)
9.2.3. Reduction half reaction. (2)
9.2.4 Oxidation half reaction. (2)
9.2.5 Balanced net ionic equation. (3)
[12]

TOTAL: 150

Copyright reserved Please turn over

### Page 14

Downloaded from hlayiso.com
Physicsuentoneded from Stanmorepbysics.com November 2023 Examination

DATA FOR PHYSICAL SCIENCES GRADE 11

PAPER 2 (CHEMISTRY)

GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 11

VRAESTEL 2 (CHEMIE)

TABLE 1: pss CONSTANTSITABEL 1: FISIESE KONSTANTES
re

NAME/NAAM SYMBOL/SIMBOOL VALUE/WAARDE
Standard pressure 0 5
Standaarddruk P Linen ee” Pe
Molar gas volume at STP Snr
Molére gasvolume by STD Vm 22,4'dm"-mot
Standard temperature 6
Standaardtemperatuur T 273K
Charge on electron . 19
Lading op electron E 1.6 x.10'C
Avogadro's constant 23 marl
Avogadro-konstante Na G02s 1D net
TABLE 2: FORMULAE/TABEL 2: FORMULES
m
n=— n=—
M Na
call or/of c= n ms
V MV Vi,
CaVa _ Mg
CV, 7 ny

Copyright reserved

Please turn over

### Page 15

Downloaded from hlayiso.com

PhysicDaumionedled from Stanmorephysics.com

2

TABLE 3: THE PERIODIC TABLE OF ELEMENTS

November 2023 Examination

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
(I) (II) (ill) (IV) (Vv) (VI) (vil) (vIn)
Atomic number
a 1 KEY/SLEUTEL Atoomgetal 2
a H He
1 29 4
3 4 Electronegativity __ | ® Cu <_Symbol 5 6 7 8 9 10
& Li |3 Be Elektronegatiwiteit “| 4 ir Simbool S Bs Nile $ Ne
7 9 : 11 12 14 16 19 20
11 12 tf 13 14 15 16 17 18
2 Na/$ Mg Approximate relative atomic mass 2A)? Sild P iS =C@| Ar
23 24 Benaderde relatiewe atoommassa 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
S = Ca|% Se /3 Ti |S V |S Cr |SMn/& Fe |3 Co|S Ni |S Cu|3 Zn |S Ga|S Ge |S As |S Se/§ Br| Kr
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
6 Rb/S Sr iS Y |S Zr) Nb|/SMo/3 Tc\s Ru|s Rh |X Pd |G Ag |S Cd/5 In |S Sn/3Sb/s Te |G | Xe
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
S Cs|$ Ba| La|S$ Hf| Ta} W)| Re| Os| Ir| Pt) Au| Hg|3 T@ |S Pb/3 Bi |S Po/s At) Rn
133 137 139 179 181 184 186 190 192 195 197 201 204 207 209
87 88 89
Lt a
3 Fr js Ra Ac 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
Copyright reserved Please turn

over

### Page 16

Physical sciencesPAVQWNIOaded fronrhtayise:com

lity/Toenemende oksiderende vermoé

bi

ing oxidising a

Increas'

Increasing reducing ability/Toenemende reduserende vermoé

4k: TENTIALS
Downloaded Sth SNP EN et
Half-reactions/Halfreaksies E° (v)
Fo(g)+2e = 2F- + 2,87
Co*#+e = Co* +1,81
H202+ 2H*+2e° = 2H20 +1,77
MnO, +8H*+5e = Mn**+4H20 +1,51
Chk(g)+2e = 2Ch + 1,36
CrO? +14Ht+6e = 2Cr*+7H2O | +1,33
O2(g)+4H*+4e- = 2H20 +1,23
MnOz2+ 4H*+2e- = = Mn?* + 2H20 + 1,23
Pt}+2e = Pt +1,20
Bro(t)+2e° = = 2Br +1,07
NO3 +4H*+3e- = NO(g) +2H20 + 0,96
Hg?*+2e = H(t) +0,85
Agt +e Ag + 0,80
NO3 +2H*+e = NO2g)+H2O0 +0,80
Fe*+e = Fe +0,77
O2(g) + 2H* + 2e- == H2O02 + 0,68
la+2e = 2b +0,54
Cut +e Cu + 0,52
SO2+4H*+4e- = S+2H20 +0,45
2H20+O2+4e = 4OH™ +0,40
Cu*+2e = Cu + 0,34
SO% +4H'+2e- = SO2(g)+2H20 | +0,17
Cu%*+e- = Cu’ + 0,16
Sn*+2e = Sn +0,15
S+2H*+2e = HeS(g) +0,14
2H*+2e- = Ha(g) 0,00
Fe +3e- = Fe — 0,06
Pb**+2e- = Pb —0,13
Sn’ +2e = Sn -0,14
Ni#*+2e = Ni -0,27
Co*+2e = Co — 0,28
Cd*+2e = Cd -0,40
cet+e = Crt —0,41
Fe?++2e = Fe — 0,44
Cr++3e = Cr -0,74
Zn*+2e = Zn — 0,76
2H20+2e = H2(g) + 20H - 0,83
Cr++2e = Cr -0,91
Mn** + 2e- Mn -1,18
AG@t+3e = AL - 1,66
Mg**+2e = Mg — 2,36
Nat+e = Na -2,71
a’t+2e = Ca — 2,87
Sr2* + 2e- Sr — 2,89
Ba%*+2e = Ba — 2,90
Cs*+e = Cs - 2,92
K'te = K ~ 2,93
Lit+e Li — 3,05

Copyright reserved

Please turn over

### Page 17

Physical Sciences\PA DOWVNIOAded fro mhia yi S OOOH Examination
Downloaded $f42 48.G/ANOARPREDUER NB TeNTIALS

TABEL 4B: STANDAARD-REDUKSIEPOTENSIALE

Half-reactions/Halfreaksies £e (Vv)

Lite = Li — 3,05
Ktte = K — 2,93
Cst+e = Cs — 2,92
Ba*+2e = Ba — 2,90
Ssr*+2e = Sr — 2,89
Ca*+2e = Ca — 2,87
Na*+e = Na -2,71
Mg**+2e = Mg — 2,36
AG++3e = AL — 1,66
Mn**+2e- = Mn -1,18
Cr++2e- = Cr — 0,91
2H20 +2e- = Ha(g) + 20H ~ 0,83
Zn*+2e = Zn — 0,76
cr++3e = Cr —0,74
Fe**+2e = Fe —0,44
Cette = Crt -0,41
Cd**+2e = Cd 0,40
Co*+2e = Co — 0,28
Ni#*+2e = Ni -0,27
Sn**+2e = Sn — 0,14
Pb**+2e- = Pb -—0,13
Fe*+3e = Fe — 0,06
2H*+2e- = Hag) 0,00
S+2H*+2e = H2S(g) +0,14
Sn*+2e = Sn? +0,15
Cu*+e- = Cut + 0,16
S02 +4H++2e- = SO2(g)+2H20| +0,17
Cu**+2e = Cu + 0,34
2H20+O2+4e = 40H +0,40
SQ2+4H*+4e° = S+2H20 +0,45
Cuv+e = Cu +0,52
k+2e = 2 +0,54
O2(g) + 2H* + 2e° == H202 + 0,68
Fe+e = Fe +0,77
NO3+2H*+e = NO2(g) +H20 + 0,80
Agite = Ag +0,80
Hg**+2e = Hg(t) +0,85
O53 +4H*+3e = NO(g) +2H20 + 0,96
Bro(t)+2e = = 2Br +1,07
Ptt+2e = Pt +1,20
MnO2+ 4H*+2e- = = Mn?* + 2H20 +1,23
O2(g) + 4H*+4e° = 2H20 +1,23
Cr? +14H++6e = 2Cr*+7H2O | +1,33
Ck(g)+2e° = 2Ch + 1,36
MnO, +8H*+5e = = Mn**+4H20 +1,51
H202+2H*+2e = 2H20 +1,77

Copyright reserved

### Page 18

Physical SciencesPA QW NIoaded fre mhia y |S Ov 14HR2 Examination
Downloaded “pn Stanmorephysics. com

F(g) +2e- =F

+1,81
+ 2,87

Increasing oxidising ability/ Toenemende oksiderende vermoé

Increasing reducing ability/Toenemende reduserende vermoé

Copyright reserved

### Page 19

Downloaded from hlayiso.com
Downloaded from Stanmorephysics.com

} KWAZULU-NATAL PROVINCE
EDUCATION
REPUBLIC OF SOUTH AFRICA

NATIONAL
SENIOR CERTIFICATE

GRADE 11

This marking guideline consists of 7 pages.

Copyright reserved Please turn over

### Page 20

Downloaded from hlayiso.com

Physicsawrtemeled From Stanmorephyséespacees examination
QUESTION 1: MULTIPLE-CHOICE QUESTIONS

11 Cv¥v
12 Dvv
13 BYY
1.4 Accept all optionsy ¥
15 Dv¥v
16 AVY
17 AVY
18 Cvv
19 Cvv
1.10 Dvv
QUESTION 2
2.1 A pair of electrons in the valence shell of an atom that is not shared with another
atom. Vv
2:2:1
H
v
x@ v
20 3H
ee
2.2.2
@ v
Cle /
2.3.1 2v
Zon 2h
2.4 O-FY
The difference in electronegativity between O-F is greater than that between
O-H/F has a higher electronegativity than H. vv
2.5 Angular/bentY
2.6 Dv

Copyright reserved

[20]

(2)

(2)

(2)
(1)
(1)

(3)
(1)
())

Please turn over

### Page 21

Downloaded from hlayiso.com
PhysicDsuwntended from Stanmorephysi 2021 Preparatory Examination
ese we
2.7 NHs has polar molecules with hydrogen bonds/dipole-dipole forces and H2O has

polar molecules with hydrogen bonds/dipole-dipole forces. v
Forces are of the same order/comparable strengths. v

OR
Both molecules are polar / The strengths of the dipoles are of the same
order/com le. v
Polar sol ssolve in polar solvents / Like dissolves in likev (2)
2.8 2.8.1 Theaverage distance between the nuclei of two bonded atoms. v Vv (2)

2.8.2 The N atom is bigger than the H atom, v resulting in a bigger distance

between the N and C nuclei. (2)
28.3 3Vvv (2)
[21]

QUESTION 3 (Start on a new page.)

3.1 The temperature at which the vapour pressure of a substance equals

atmospheric pressure. VV (2)
3.2 Boiling point. ¥ (1)
3.3

3.3.1. Dipole- dipole forces v (1)

3.3.2 Hydrogen bondingY (1)
3.4. Less than’ (1)

3.5 Hydrogen bonding between H2O molecules is stronger than the dipole-dipole
forces between H2S molecules. v
More energy is required to overcome the intermolecular forces between water
molecules. v (2)

3.6 Greater thanv Se is a bigger atom than Sulphurv (therefore forming a stronger
dipole). (2)

3.7. LESS THAN. ¥
NHs molecules have one site for hydrogen bonding, while H2O molecules have
two sites for hydrogen bonding. “ The intermolecular forces between molecules
of NHs are weakerv than that between molecules of HzO
Less energy will therefore be required to overcome the intermolecular forces in
NH3. ¥ (4)
[14]

Copyright reserved

### Page 22

Downloaded from hlayiso.com
Physicsuentoneded from Stanmorephysicsxcone 2021 Preparatory Examination

QUESTION 4 (Start on a new page.)
4.1.1 Boyle’s Law”. The pressure exerted by a fixed quantity of gas is

inversely proportional to the volume occupied by the gasv at constant
te ture. v

Li

4.1.2 Tempeératurev
Mi of gas/number of moles of gas”

—

4.1.3 pressurev

4.1.4 The gradient of the graph is the product of pressure and volume”
According to the table the product of pressure and volume is a
constantv
Thus yielding a constant gradientY

4.1.5
piVi = peV2
(60)(50) = (D)(35) w
D = 85,71 kPa v
4.2
4.2.1 Av

4.2.2 High pressure vv

4.2.3 The volume of the molecules of the gas and the intermolecular forces
influence the measured valuev
Causing it to be greater than the theoretical valuev
Forces of repulsion between the gas particles prevents them from
moving closer. ¥

QUESTION 5 (Start on a new page)

5.1 EXOTHERMIC. v
The energy of the products is less than the energy of reactants/energy was
releasedv

52

Hp - Hr v
109,2 - 351 v
- 241,8 kJ.moltv

AH

5.3. The unstable transition state from reactants to productsv ¥

Copyright reserved

(3)

(2)
(1)

(3)

(2)

(1)
(2)

(3)
[17]

(2)

(3)
(2)

### Page 23

Downloaded from hlayiso.com
PhysicDsuewteneded from Stanmorephysicswcone 2021 Preparatory Examination

5.4
>
Course of Reaction
Marking guidelines/Nasienriglyne:
Axes correctly labelled v
Energy of Reactants correctly indicated. v
Energy of Products correctly indicated. v
Energy of Activated complex correctly indicated | Vv
Correct shape as shown. v
(5)
5.5.1 241,8 kJ.moltv (1)
5.5.2 1611,8 kJ.moltvv (2)
[15]
QUESTION 6
6.1 Simplest (whole number) ratio in which the atoms have combined. v ¥ (2)
6.2
N fe)
% 30,4 69,6
Mass in 100g) 30,4 69,6
m 30,4 69,6
n = Mm v 14 16
= 2,17 =435 Vv
R 1 2 v
Empirical formula = NO2v
(5)
6.3 N2O4vv (2)
[9]

Copyright reserved

### Page 24

Downloaded from hlayiso.com
PhysicDsuewteneded from Stanmorephysicswcone 2021 Preparatory Examination

QUESTION 7
7.1. The reagent that is used up completely in a reaction. vv (2)
7.2 Calcium carbonate/CaCOsv Vv (2)
7.3.1
ul
COs) reacted = G )n(HCe) v
1\,m
= (Sy)
1,,20-127, vv
= Oss) v
= 0,1 mol
m(CaCOs) reacted = nM
= (0,1)(100) v
= 10g
purty _ (40) x s00v
12,5
= 80%
(7)
7.3.2
n(COz)produced
n
= ==
o 22,4
Vo= 2,24 dmsv
(4)
aa n(CacOs) = n(H20) ¥
n=
~  oM
18
= 0,7 mol
m(CaCOz) = nM
= (0,7)(100) v
= 70g
80
= — XXv¥
a 100
X = 87,5g9v

(5)
[20]

Copyright reserved

### Page 25

Downloaded from hlayiso.com
Physicsuentoneded from Stanmorephysicsxcone 2021 Preparatory Examination

QUESTION 8 (Start on a new page.)

8.1.1 An acid is a substance that produces hydrogen ions(H*)/hydronium
ions(H3O*) when it dissolves in water. v Vv (2)

nd C2047 V (2)

8.2 HSOj; Vv Actsias a base in step |, Y and as an acid in step Il (3)

8.3 NO. v The concentration of F- ions is lower than concentration of HF. ¥

HF lonises incompletelyY (3)
8.4 CHsCOOH + NaOH — CHsCOONa + H2O0 LHSY RHSv BalancingY (3)

8.5
cVY

90
0,45)( ——)v
(0,45)( T0002
0,0405 mol.dm?
n(NaOk) ¥ (ratio)

cV

165
0,5)( —~ jv
KO.EX 1000

8,25 x 10° mols
n((Zn(OH)2) = 5 (HEN) Y (ratio)

5 (0.0405 - 8,25 x 103) vv
0.016125 mols

nM

(0.016125)(99) v

1,596375 g/ 1,6 gv

n(HBr)initial

n(HBr)excess

iT)

ul

X = m((Zn(OH)2)

Wow uw

(9)

[22]

QUESTION 9 (Start on a new page.)
9.1 Oxidation is the loss of electronsv v (2)
9.2.1. Hydrogen sulphide/H2S/S*-Y S undergoes an increase in oxidation no.” (2)
9.2.2 Potassium permanganate/permanganate ion/KMnOa/MnOa/Mn7*v (1)
9.2.3 MnO« +8H*t +5e — Mn? + 4H20 vv (2)
9.2.4 HS + S + 2H* + 2evv (2)
9.25 2MnO, + 5H2S + 6H* > 2Mn*%* + 5S + 8H2O (3)
(LHS V; RHS V ; Balanced correctly “) [12]
TOTAL 150

Copyright reserved

## Related documents

- [Gr 11 Physical Sciences P2 (ENG & AFR) 2023 Possible Answers](https://www.hlayiso.com/library/gr-11-physical-sciences-p2-eng-afr-2023-possible-answers/8d7cc499-9316-4014-b5b3-58db5608ef10) — Physical Sciences · Memo · 2023 · Eng
- [PHYS SCIENCES P2 QP GR11 NOV2023 English](https://www.hlayiso.com/library/phys-sciences-p2-qp-gr11-nov2023-english/58611438-b79b-4742-8006-1727fe13a46c) — Physical Sciences · QP · 2023 · Eng
- [KZN Physical Sciences Grade 11 November 2025 P2 and Memo](https://www.hlayiso.com/library/kzn-physical-sciences-grade-11-november-2025-p2-and-memo/f6f699c6-e985-44e2-9d36-d660697bd6fe) — Physical Sciences · QP + Memo · 2025
- [physics p2-Nov-2016](https://www.hlayiso.com/library/physics-p2-nov-2016/86a780a5-796e-4ab3-b8a3-a54c41acc10f) — Physical Sciences · QP · 2016
- [Gr 11 Physical Sciences P2 (English and Afrikaans) November 2022 Possible Answers](https://www.hlayiso.com/library/gr-11-physical-sciences-p2-english-and-afrikaans-november-2022-possible-answers/feceb912-bfff-45f1-be1d-8448ed3c290c) — Physical Sciences · Memo · 2022 · Afr
- [Gr11 Phy P2 (AFR & ENG) November 2019 Possible Answers](https://www.hlayiso.com/library/gr11-phy-p2-afr-eng-november-2019-possible-answers/510ad17e-b55d-4bbe-86a4-8e89e1bb424d) — Physical Sciences · Memo · 2019 · Eng

## More from Grade 11 Physical Sciences

- [Grade 11 Physical Sciences P2 November 2026 Mock 2](https://www.hlayiso.com/library/grade-11-physical-sciences-2026-november-mock-exam-2-question-paper-paper-2/4bd46b50-41c8-4670-83a6-c99f40ba7aa1) — QP · 2026 · Eng
- [PHYSICAL SC P1 QP GR11 NOV 2025 AFRIK watermark](https://www.hlayiso.com/library/physical-sc-p1-qp-gr11-nov-2025-afrik-watermark/3757d93e-3b4a-4e27-9a6b-69591d990a97) — QP · 2025 · Afr
- [KZN Physical Sciences Grade 11 November 2025 P1 and Memo](https://www.hlayiso.com/library/kzn-physical-sciences-grade-11-november-2025-p1-and-memo/82b3d6a5-9e71-4efe-a8e0-f2a63d6aff58) — QP + Memo · 2025
- [LP Physical Sciences Grade 11 June 2025 P2 and Memo](https://www.hlayiso.com/library/lp-physical-sciences-grade-11-june-2025-p2-and-memo/b76990f6-708a-47e3-a903-95cc3c58534d) — QP + Memo · 2025
- [MP Physical Sciences Grade 11 June 2025 P1 and Memo](https://www.hlayiso.com/library/mp-physical-sciences-grade-11-june-2025-p1-and-memo/4c5694d8-7cdc-4fd9-90b4-55bbb8969872) — QP + Memo · 2025
- [PHYS SCIENCES P1 QP GR11 NOV 2024 AFR D watermark](https://www.hlayiso.com/library/phys-sciences-p1-qp-gr11-nov-2024-afr-d-watermark/918f95ae-174f-4a62-9066-40676642795b) — QP · 2024 · Afr

## Collection

- [Grade 11 past papers](https://www.hlayiso.com/grade-11/past-papers)

---

Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. When citing, link the page URL above, not a PDF or /api/ URL.