# Physical Sciences Grade 12 NSC June 2013 Question Paper

> Grade 12 Physical Sciences question paper from the NSC June 2013, 23 pages. Read online or get the free PDF download, memo linked when available.

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- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 12
- Document type: Question paper
- Year: 2013
- Exam period: NSC June
- Curriculum: CAPS
- Pages: 23

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## About this document

Physical Sciences · Grade 12 · NSC June · 2013. Question paper, 23 pages. Read online or download the PDF.

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

## Document text

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basic education

Department:
Basic Education
REPUBLIC OF SOUTH AFRICA

SENIOR CERTIFICATE EXAMINATION

FUNCTIONAL PHYSICAL SCIENCE
STANDARD GRADE

2013

MARKS: 200

TIME: 3 hours
FUNCTIONAL PHYSICAL SCIENCE SG
3052E

30520E

This question paper has 17 pages and 3 information sheets.

X@5

MIMI

conyignresoned NAN 40 A ease uno

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Functional Physical Science/SG

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2 DBE/2013
SCE

REQUIREMENTS:

An approved (non-programmable, scientific) calculator. Candidates should supply their
own calculators.

INSTRUCTIONS AND INFORMATION

Ue

Write your examination number and centre number in the spaces provided on
the cover of the ANSWER BOOK.

Answer ALL the questions in the ANSWER BOOK. Number ALL the answers
in accordance with the question paper.

Round the answers off to TWO decimal digits, where applicable.

An information sheet is attached at the end of this question paper. It contains
equations and constants. Some of the information may be useful in answering
the question paper.

Rough work may be done at the back of the ANSWER BOOK.

Write neatly and legibly.

Conyright recorved LT AC TLUL IL Please turn over

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Functional Physical Science/SG 3 DBE/2013
SCE

SECTION A
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—1.30) in
the ANSWER BOOK.

EXAMPLE:

At which temperature does pure ice melt?

A 4°C

B 0°C

Cc OK

D 4°C

ANSWER: B

PHYSICS

1.1 When an electrical current passes through a conductor, it causes ...

A amagnetic field in the conductor.
B_anelectric field in the conductor.
C  amagnetic field around the conductor.
D__anelectric field around the conductor.

1.2 ... is used to transmit electrical energy over long distances.

A __ Alternating current
B Direct current

C Cells

D Electric motors

1.3 An emf is induced in a conductor when the conductor ...

A — moves through the air.

B is connected to a cell.

Cc moves through a magnetic field.
D _ is connected to a dynamo.

1.4 Which ONE of the following is a property of electromagnetic waves only?
A Moves through a vacuum
B Diffraction
C Interference
D Polarisation

Cepantesene A 0 0 Pease mover

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Functional Physical Science/SG 4 DBE/2013
SCE
1.5 The process by which electrons are removed from a metal by light, is
called ...

A __ thermionic emission.
B__ ionisation.

C radiation.

D photo emission.

1.6 Cells with the same emf and identical resistors are used in the circuits below.

In which ONE of the diagrams below does the ammeter show the greatest
reading?

A

1.7 According to Ohm's law, the ...

potential difference is inversely proportional to the current strength.
potential difference is directly proportional to the current strength.
resistance is directly proportional to the current strength.
temperature is directly proportional to the potential difference.

when» 2

Copa reson LU Pose wm over

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Functional Physical Science/SG 5 DBE/2013
SCE

1.8 In a transformer ...

A electrical energy is created.

B_ thermo-ionic emission takes place.

C_ potential difference is changed.

D_ alternating current is changed to direct current.

1.9 Which ONE of the following is NOT a method of removing electrons from an
atom?

A_ Emission-line spectrum
B_ Thermo-ionic emission
C_ Photo-electric effect

D Friction

1.10 An electron (e) engages an energy level in an atom, as shown in the diagram
below. What will happen to the electron when it gains energy?

The electron is excited and moves to P.
The electron is excited and moves to Q.
The electron is pushed out of the atom.
Light is emitted.

uaNDY

1.11 How is electromagnetic radiation generated?

Acceleration of charges in an electric field
Diffraction of light through different media
Refraction of light through different media
Movement of charges at a constant speed

woke 2

Conroe NON A A Pesotum vr

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Functional Physical Science/SG 6 DBE/2013
SCE
ce When white light is shone through a 60° prism, the light is dispersed into

seven colours, namely red, orange, yellow, green, blue, indigo and violet.
These colours are arranged according to increasing ...

A charge.

B_- wave length.
C_ frequency.

D_ speed.

Which statement is applicable to a step-down transformer?

A_ The number of turns on the primary coil is more than the number of turns
on the secondary coil.

B The number of turns on the secondary coil is more than the number of
turns on the primary coil.

C The current in the secondary coil is lower than the current in the
primary coil.

D The current in the secondary coil is the same as the current in the
primary coil.

Which appliance works on the motor effect?

A_ Microphone

B_ Electric bell

C Galvanometer
D_ Transformer

Peter places a soft iron core in a current-bearing coil. This causes the
magnetic field surrounding the coil to ...

A _ stay constant.

B_ change its direction.

C_ increase.

D_ decrease. (15 x 2) (30)

CHEMISTRY

1.16

Rutherford found that when gold foil is bombarded with alpha particles, most
of the alpha particles move through the foil, but a small amount is reflected.
He suggested that ...

A the atom consists of a small, dense, positive nucleus surrounded by
electrons.

electrons are big particles in comparison to protons.

electrons move in orbitals around the nucleus.

the nucleus of an atom consists of protons and neutrons.

00W

Copyright reserved EEUU AEA A EA deneininial

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Functional Physical Science/SG 7 DBE/2013
SCE
1.17 When an electron is raised from a lower energy level to a higher energy level

1.19

1.20

1.21

1.22

in an atom ...

A energy is liberated by the atom.

B the electron gains energy.

C_ the atomic nucleus loses energy.
D_ the atom becomes a negative ion.

A substance in which the intermolecular forces between molecules are very
small, will ...

A evaporate easily and have a low boiling point.

B_ evaporate easily and have a high boiling point.

C_ evaporate with difficulty and have a low boiling point.
D_ evaporate with difficulty and have a high boiling point.

The bond between the H atom and the Cf atom in the HC£ molecule can best
be described as ...

A __ resulting from Van der Waals forces.
Ba hydrogen bond.

C_ anionic bond.

Da polar covalent bond.

While energy is needed to break bonds, it is usually also released when
bonds are formed. When an electric current is sent through acidified water
(H20), it is an example of a reaction where bonds ...

A play no part.

B_ remain unchanged.
Care broken.
Dare formed.

Which ONE of the following describes a chemical reaction at equilibrium
under all circumstances?

A The reaction takes place in an open container.

B_ The rate of the forward reaction is equal to the rate of the reverse
reaction.

C_ The reaction mixture contains equal concentrations of reactants and
products.
D_ The products form at a faster rate than the reactants.

The following reaction has reached a state of equilibrium:

Haq) + laig) = ZHligy,, AH < 0

The concentration of HI can be increased by ...

reducing the temperature.

increasing the temperature.

increasing the pressure on the system.
reducing the pressure on the system.

leon: 2

Coprantaseed 0 Pose wmover

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Functional Physical Science/SG 8 DBE/2013
SCE
1.23 In which ONE of the following is the oxidation number of nitrogen (N) zero?
A NOs
B  NH3
Cc NO,
D No

1.24 Study the equation of the following reaction:
2FeCts + H2S > 2FeCh, + S + 2HCL
The oxidation number of the oxidising agent changes from ...

A -2to0.
B +3 to +2.
D +3to0.
C -2to +2.

1.25 Which ONE of the following processes takes place at the anode of an
electrochemical cell while it is delivering a current?

A_ Neutralisation

B Reduction only

C Oxidation only

D_ Both reduction and oxidation

1.26 The only products that form when a certain substance burns in oxygen are
water and carbon dioxide. Which ONE of the following is most likely the
substance?

A 2

B CH,
C CHs3
D CChy

1.27 Lindie lowers a small piece of burning potassium (K) into a gas cylinder filled
with oxygen (O2). What does she observe?

A Ared flame

B_ An intense yellow flame
C_ Anintense white flame
D Agreen flame

1.28 Each successive alkane in the homologous series differs from the previous
alkane by ... protons.

0NOWDY
3 © OO

2

Cop send NA 0 Pose um over

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Functional Physical Science/SG 9 DBE/2013
SCE

1.29 A halogen derivative was formed by using a reactant which was a liquid at
room temperature. Which ONE of the following is the derivative?

A H

B H H

c H H H

D H H H HH

1.30 O
ll
H—C—H

The compound above is known as ...

ethanoic acid.

propanone.

methanal.

methanol. (15 x 2) (30)

0QNU>

TOTAL SECTION A: 60

Cornea 0 Pease um or

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Functional Physical Science/SG 10 DBE/2013
SCE

SECTION B: PHYSICS
QUESTION 2: MAGNETIC EFFECT

Electric motors are used frequently in everyday life. The sketch below is a simple
representation of an electric motor.

B Cc
A D
YG
A X
/ |
2.1 In which direction will coil ABCD rotate when switch S is closed? Answer the
question by writing: Conductor AB will rotate ... (2)
2.2 Explain your answer to QUESTION 2.1. (3)
2.3 Name the following parts:
2.3.1 xX (1)
2.3.2 Y (1)
2.4 What is the function of Y in the electric motor? (2)
2.5 Name TWO changes which will cause the coil to rotate faster. (4)

[13]

Conyteseved NAN Pease um vr

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QUESTION 3: MAGNETIC INDUCTION

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Functional Physical Science/SG

11
SCE

DBE/2013

The sketch below is a simple representation of an alternating-current dynamo.

77 Name the following parts:
3.1.1 x
3.1.2 Y

3.2
Q or from Q to P)

3.3

3.4

Copyright reserved

N

B

Cc

S

(1)
(1)

What will be the direction of the conventional current through the
galvanometer at the moment conductor AB moves into the page? (From P to

How will you change the apparatus into a direct-current dynamo?

Name TWO methods to increase the reading on the galvanometer.

GAUTENG

(2)
(2)

(4)
[10]

Please turn over

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Functional Physical Science/SG 12

SCE

QUESTION 4: TRANSFORMERS

DBE/2013

The sketch below represents a transformer with three times as many turns on the
primary coil as on the secondary coil.

“2 Sle |

primér/ sekondér/
primary secondary

4.1 Is this a step-up transformer or a step-down transformer?

4.2 The current in the primary is 1 A and the voltage across the secondary is 4 V.
Assume that there is no energy loss. What would be the expected magnitude
of the following:

4.2.1 The current in the secondary coil
4.2.2 The power in the secondary coil

4.3 Will the transformer function if the primary coil is connected to a 12 V motor
battery? Explain your answer.

QUESTION 5

5.1 Draw a neat diagram to show how a galvanometer G and a resistor R must be
connected to form an ammeter.

| Does this resistor have a large or a small value?

5.3 What is this resistor called?

5.4 Which electrical quantity is measured by an ammeter?

7 In which SI unit is this quantity measured?

Conynesened NAA

Please turn over

(2)

(2)

(2)

(3)
19]

(2)
(1)
(1)
(1)

(1)
[6]

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Functional Physical Science/SG 13 DBE/2013
SCE

QUESTION 6: OHM'S LAW

In the circuit below the battery consists of five cells connected in series. The emf of
each cell is 1,5 V. The internal resistance of the battery is negligible. L is a bulb with a
resistance of 0,9 Q.

(n> | 14s
A °
AIH] HIE
(Vv)
Ww) (At)
7Q
3a
L
6.1 What is the reading on voltmeter V and ammeter A if switch S is open? (4)
6.2 The switch is now closed. Calculate the total resistance in the circuit. (5)
6.3 Calculate the current through the lamp. (4)
6.4 Calculate the reading on ammeter A1. (5)
6.5 What will happen to the brightness of lamp L if the 39 resistor is removed
from the circuit? (1)
6.6 Explain your answer to QUESTION 6.5. (3)
[22]

QUESTION 7: WAVES

Karin causes waves in a ripple tank. The waves have a speed of 0,8 m.s* and a
wavelength of 20 mm.

7.1 Calculate the frequency of these waves. (4)
7.3 What is the period of these waves? (2)
[6]

Cont eso A A Pease um or

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Functional Physical Science/SG 14 DBE/2013
SCE

QUESTION 8: LIGHT, COLOUR AND SPECTRA

Saskia shines white light onto one side of a glass prism.

White light

8.1 Which colour experiences the most refraction? (2)
8.2 Which colour from the spectrum has the highest frequency? a
CHEMISTRY
QUESTION 9: ATOM STRUCTURE
Complete the following statements by filling in the missing words.
9.1 An element is composed of small fundamental particles called ... (2)
9.2 These particles have a ... charged nucleus. (2)
9.3 The nucleus is surrounded by a cloud of charged particles called ... (2)
9.4 In their non-combined state these fundamental particles of elements are

normally ... charged. (2)
9.5 If one of these particles gains or loses a negatively charged particle, a(n) ...

is formed. (2)

[10]

Conynrosene NAN A Pease tum ove

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Functional Physical Science/SG

QUESTION 10

15
SCE

DBE/2013

10.1 Match the descriptions (10.1.1-10.1.4) with the substances in the list below.
Choose only ONE substance for each description.

[ NH3;_C;__ MgCty; Fo; |
10.1.1 A substance consisting of polar molecules with polar covalent
bonds (2)
10.1.2 A substance consisting of non-polar molecules with polar covalent
bonds (2)
10.1.3 This substance dissolves to form positive and negative ions (2)
10.1.4 In the solid phase, the particles of this substance are held together
by covalent bonds (2)
10.2 Use a Lewis diagram, for example H3H, and show how the water molecule
bonds. (4)
[12]
QUESTION 11: INTERMOLECULAR FORCES
Use the table below to answer the questions that follow.
MOLECULE MASS MELTING BOILING
POINT POINT
Ch 71 -103 -35
Bro 160 -7,2 59
lp 254 114 184
11.1 Which substance will form a solid at room temperature? (2)
11.2 Which substance has the strongest intermolecular forces? (2)
11.3 What type of intermolecular forces do we find between the molecules of the
substances in the table above? (2)
11.4 Explain why Iz has a higher melting and boiling point than Bro. (4)
[10]

Copyright reserved

GAUTENG

Please turn over

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Functional Physical Science/SG 16 DBE/2013

SCE

QUESTION 12: ENERGY AND CHEMICAL BONDING

The oxidation of sulphur(IV)oxide to sulphur(Vi)oxide is an essential step in the
production of sulphuric acid.

12.1

12.2

12.3

12.4

12.5

12.6

2SOniq) + Org) = 280g) (AH = -95 kJ.mol")

During the forward reaction a net amount of energy is released. Explain the
origin of this excess energy.

Which of the gases must be removed continuously to ensure a high yield
of products?

If the equilibrium in the reaction shifts so that the concentration of the
reactants increases, what will happen to the pressure? (Assume the volume
and the temperature remain constant.)

Will the reverse reaction be exothermic or endothermic?

What will be the influence of an increase in temperature on the following:
12.5.1 Yield of the product

ea? Rates of the forward and the reverse reactions at equilibrium

What will the influence of a decrease in pressure be on the production
of SO3(q)?

Copa reson A 0 0 Pease wm over

(4)

(2)

(2)
(2)

(2)

(2)

(2)
[16]

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Functional Physical Science/SG Us DBE/2013

SCE

QUESTION 13: ELECTROCHEMISTRY

Study the diagram below and answer the questions that follow.

51
mal
platinum rods
concentrated
copper chloride solution
13.1 Is this an electrochemical cell?

13.2 Write down the formulae of the TWO ions formed when copper chloride
dissolves in water.

13.3 What are the platinum rods called?
13.4 What is observed at the following:

13.4.1 The positive rod
2C2" > Clo + 2°

13.4.2 The negative rod
Cu’? + 2e° — Cu

13.5 Write down a balanced equation for the complete redox reaction.

13.6 Does the positive rod act as the cathode or as the anode?

QUESTION 14

Write down the structural formula for each of the following:
14.1 Ethane

14.2 CH3COOH

14.3 Ethanol

TOTAL SECTION B:
GRAND TOTAL:

Comrise AA AAA

(2)

(4)
(2)

(2)

(2)
(3)

(2)
[17]

(2)
(2)

(1)
[5]

140
200

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Functional Physical Science/SG DBE/2013
SCE

PHYSICS INFORMATION SHEET/
FISIKA-INLIGTINGSBLAD

EQUATIONS/VERGELYKINGS

WAVES/GOLWE ELECTRICITY/ELEKTRISITEIT
Vv = Af R = 4 + lo + 13
f = 1 a . a + i : i
T R q % fr
Volp = Vels = P
.. : N,
Vv, N,
PHYSICS CONSTANTS/

FISIKA-KONSTANTES

Miscellaneous constants (Approximate values)
Diverse konstantes (Benaderde waardes)

NAME/NAAM SYMBOL/SIMBOOL VALUE/WAARDE
Speed of light
Spoed van lig c 3x 10° ms"

Charge on electron
Lading op elektron e -1,6x 10°C

Co Tce CEU AAT UTA A

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Functional Physical Science/SG

DBE/2013

SCE

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Functional Physical Science/SG DBE/2013
SCE

STANDARD REDUCTION POTENTIALS OF A NUMBER OF HALF-REACTIONS
STANDAARD-REDUKSIEPOTENSIALE VAN VERSKEIE HALF-REAKSIES

 Volts/
Half-reaction/Half-reaksie E’ volt

lite = Li -3,05

Ki+e = K -2,93

Cs*+e = Cs -2,92

Ba*+2e + Ba -2,90

Srt+2e = Sr -2,89

Ca*+2e = Ca -2,87

Nat*+e = Na -2,71

Mg” +2e = Mg -2,37

A +3e = Ad -1,66

Mn**+2e = Mn -1,18

2H,0 +2e = H,+20OH™ -0,83

Zn*+2e = Zn -0,76

© Crt+3e = Cr -0,74

ie) Fe**+2e = Fe -0,44 4

Sé Cd*+2e = Cd -0,40 ®
Se Co**+2e = Co -0,28 sf
a8 Ne +2e7 = Ni ~0,25 £8
Ls Sn*+2e = Sn -0,14 $6
2 Pb*+2e° = Pb -0,13 2%
XQ Fe*+3e = Fe -0,04 oo
os 2H*+2e = H, 0,00 3k
£2 S+2H'+2e = HS +0,14 23
s 2 Sn*+2e° = Sn* +0,15 Ds
5 8 Cu*+e = Cur +0,16 oF
=e SO? +4H*+2e = SO,+2H,O +0,17 os
{ Cue +2e = Cu +034 | £8

2H,0+0,+4e° = 40H +0,40

SO,+4H*+4e = S+2H,0 +0,45

I+2e = 2r +0,54

oO. ortrtrts=SCtrsSs CC +0,68

ay Fe*+e = Fe* +0,77

Hg**+2e = Hg +0,79

NO,+2H*+e = NO,(g)+H,O +0,80

Ag'+e = Ag +0,80

NO,+4H*+3e = NO(g)+2H,0 +0,96

Br,(0)+2e = 2Br +1,09

P'+2e = Pt +1,20

MnO, +4H*+2e” # Mn? +2H,O +1,21

0,(g)+4H*+4e = 2H,O +1,23

Cr,02 + 14H*+6e + 2Cr*+7H,O +1,33

Ci,(g)+2e = 2Cr +1,36

Au*+3e = Au +1,42

MnO; +8H*+5e = Mn*+4H,O +1,51

H,O, + 2H*+2e = 2H,O +1,77

F,(g)+2e° * 2F° +2,87

E°ceil = E°cathode — E°anode | Ese! = E°katode — E°anode

Copyright reserved CHAT UO AOU

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- [Grade 12 past papers](https://www.hlayiso.com/grade-12/past-papers)

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