# Physical Sciences Grade 12 KZN March 2022 Memo

> Grade 12 Physical Sciences memorandum from the KZN March 2022, 21 pages. Read online or get the free PDF download, question paper linked when available.

- Page: https://www.hlayiso.com/library/kzn-ps-gr12-march-2022-qp-memo/3a44f7f2-9a3b-4170-b1f7-5b48f439827e
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 12
- Document type: Memorandum
- Year: 2022
- Exam period: KZN March
- Curriculum: CAPS
- Pages: 21

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## About this document

Physical Sciences · Grade 12 · KZN March · 2022. Memorandum, 21 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 2

Physical Sciences                          NSC               March 2022 Common Test

INSTRUCTIONS AND INFORMATION
1.         Write your centre number and examination number in the appropriate spaces
           on the ANSWER BOOK.

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

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

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

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

6.         You may use a non-programmable calculator.

7.         You may use appropriate mathematical instruments.

 8.        You are advised to use the attached DATA SHEET§>,

9.         Show ALL formulae and substitutions in ALL ca2ilations.

 10.       Round off your final numerical answers�� minimum of TWO decimal places.

 11.       Give brief motivations, discussions ef?etera where required.

 12.       Write neatly and legibly.   "'Q

Copyright reserved                                                           Please Turn Over

### Page 3

March 2022 Common Test

  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 (1.1-1.6) in the
  ANSWER BOOK, for example 1.11 D.

  1.1    According to Ne ton's Second Law of Motion, the acceleration of an object is ...
                        r
         A           ways equ,I to its mass.
                ·
         B          versely proportional to its mass.
         • .•                , I
......,.____,e-directly--proportional to its mass.

         D      independent of its mass.
                                                                                                                                            (2)
  1.2    A ball, moving horizontally, hits a wall with a speed 2v. Th�}i(then bounces
         back horizontally with a speed v, as shown in the diagra� i:(e1ow.

                                • ..    _.
                                            2v
                                                                                    +--v -
                                                                                                                     •
          Which ONE of the followin9 cc@.binations regarding the linear momentum and
          the total kinetic energy of the ball for the collision above is CORRECT?
          Assume that the ba ll-wfi system Is IsoI ated
                                              'l.
                     LINEAR MOM-F,fffUM                             KINETIC ENERGY
          A --
         �--··            Consewed                                     Conserved
                                                                            - ---·
                    -�- - �(0'0nserved ·
                              .0.. . ------- -- -•-'••.
                                 v                      ..,..____
                                                                                  ��--�----·�-
         73·-·                                                              Not conserved
                       -'�
                                                                    --�s.                          --•�mN,r•••••�.

          C          ....L Not conserved                                     Conserved
                    iV
          D                Not conserved                                    Not conserved
                                                                                                                                            (2)
   1.3    An object falls freely in a vacuum near the surface of the Earth.
          Which ONE of the following statements regarding the motion of the
          object is CORRECT?
          A     The rate of change of velocity of the object will remain constant.

          B         The rate of change of velocity of the object will increase uniformly.

          C         The velocity of the object will decrease uniformly.

          D         The velocity of the object will remain constant.                                                                        (2)
  Copyright reserved                                                                                                     Please Turn Over

### Page 14

Downloaded from Stanmorephysics.com

education

Department:
Education
PROVINCE OF KWAZULU-NATAL

NATIONAL
SENIOR CERTIFICATE

GRADE 12

This marking guideline consists of 7 pages.

MARKS : 100

Copyright Reserved Please turn over

### Page 15

Physicaldeanetoaded from Stanmorephysics.com March 2022 Common Test
SC

QUE
14

1:2
1.3
1.4 Cyvv
1.5 Byv
1.6 Dvv
(6x 2) =12
QUESTION 2
2.1.1 When a resultant/net force acts on an object, the object will accelerate in the
direction of the force at an acceleration directly proportional to the force“ and
inversely proportional to the mass of the object. v
OR
The resultant/net force acting on an object is equal to the rate of change of (2)
momentum of the object in the direction of the net force. YY (2 or 0)
21.2
FrormalY FrormalY
Friction” OR Friction
Fx
Fv
Fgravity¥ anne ey
(4)
2.1.3 Fnet=ma
v
N=Fg + Fy
N = ((4x9,8) + 10Sin30°)v
N = 44,20 Nv (3)
2.1.4

Fnet = ma

Fn-—Fr =ma } i

10Cos30° v—2 = 4av

a=1,67 ms?v (4)

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### Page 16

Physicaleanesoaded from Stanmorephysics.com March 2022 Common Test
SC

2.1.5 DECREASESY (1)

2.1.6 INCREASESY
The horizontal component of the applied force increasesv and the frictional force

decreases. ¥ (2)

2.2.1 State Newton's Law of Universal Gravitation: Each body in the universe attracts
every other body with a force that is directly proportional to the product of their

massesY and inversely proportional to the square of the distance between their
centres. ¥ (2)

Note: Underlined phrases must be in context of the law

2.2.2 M

g=Gav

r
= 6,67 x10" .5,98x 10% v
(6,38 x 10°)? v
= 9,799 N.kg+(m:s*) v (9,8 ms)
Note: if only 9,8 m:s* written then 1/4 marks (4)
[22]

QUESTION 3
3.1 In an isolated system, V the total linear momentum remains constant (2)

(is conserved). ¥

[first mark awarded only if it is in context of momentumconservation]
32 Xpi = Xpr

Maviat Mavi2 = Miver + Ma2vi2 “
(1500)(0) + (2000)(20) v= (1500)(12) + (2000)vi2 v
v2=11 mst v (4)
OR (1500)(0) + (2000)(—20) v= (1500)(—12) + (2000)vi2 ¥
vi2=—11m:s? Hence speed =11 mst v

3.3 The driver moves (momentarily) forward. v (1)
3.4 Newton’s first Law v OR Inertia (1)

[8]

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### Page 17

Physicaldeanesoaded from Stanmorephysics. com March 2022 Common Test
SC

QUESTION 4
4.1 Motion during which the only force acting on an object is the gravitational force. VW (2)
4.2 The object is projected upwards from above the ground V / the top of a building. It
then moved downwardsv below the starting position / top of the building. W (3)
4.3 OPTION 1 OPTION 2 OPTION 3
vi=vi+ atv vi=vi + adtv Grad = 9,8 v= was o
0 = vi + (9,8)(0,25) v 0=vi + (—9,8)(0,25) v ;
vi = — 2,45 ms"
vi = 2,45 mst upwardsY | vi = —2,45 ms? een
it 4! ‘s+ upwa v
vi= 2,45 ms? upwardsv " Sms “upwards (3)
44 POSITIVE MARKING FROM Q 4.3
OPTION 1 OPTION 2 OPTION 3
Vi = vi + atv vi = vi + atv Grad = 9,8 v= i = ee
vr=0 + (9,8)(4-0,25)¥ | w=—2,45 + (9,8)(4 )v 4 ‘
vi = 36,75 ms? downward” | vi = 36,75 ms downwardv vo SB Tore threneaul (3)
45
4
E
5 CRITERIA MARK
= Correct shape v
& Indications of the times | ¥
3 Zé Graph starts from origin | ¥
t(s)
v (3)
[14]

Copyright Reserved Please turn over

### Page 18

PhysicalSeanesoaded from Stanmorephysics.com

QUESTION 5

5.1.1. ester”; accept alkyl alkanoate

5.1.2 Propylv butanoatev

5.1.3. Carboxylic acidv; accept alkanoic acid

5.2 A bond or an atom or a group of atomsv that determine(s) the physical and chemical

March 2022 Common Test

properties of a group of organic compounds. v

5.3 Carboxyl (group) ¥

5.4

5.5 Organic molecules with the same molecularv formula but different structural formula. ¥

5.6.1 Secondary v

The carbon to which the hydroxyl group is bonded, is bonded to TWO other carbonsY

5.6.2

H H H
| | |

Bi eee ta nek SG
| | |

H H fe)

|

H

Functional group on correct carbonY
Whole structure correctY

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Qs" aL

=

cies Gare nels

Please turn over

(1)

(1)

(2)

(1)

(1)

(2)

(2)

### Page 19

Physicaldeanesoaded from Stanmorephysics.com

oy es. ee

aL

= .9¢ Sa
|

(p iiesat 5

x

OR

H H

| |

Cr 2350) ==0H
| |

H H

5.7.1 Organic compounds that consist of carbon and hydrogenY ONLYY

O32

Copyright Reserved

ae Seat ©

{e)

2s

als

Soe) ECS) SE

|
fe)

H
Cc — H
H H
Cc — C — C€C — H
H H H
MARKING CRITERIA
¢ 6 Carbon parent chain v
¢ 3 methyl groups on parent | ¥
chain
e Whole structure correct v

Please turn over

March 2022 Common Test

(2)

(2)

(3)

### Page 20

Physicaldeanesoaded from Stanmorephysics. com March 2022 Common Test
SC

[19]
QUESTION 6
6.1 The temperature at which the vapour pressure equals atmospheric/external
pressure. ¥v (2 or 0) (2)
6.2 Zv-
Z has the highest boiling point. ¥ (2)
6.3 Xv (1)
6.4 What is the relationship between boiling point and type of functional group/
homologous series?
Identify dependent variable
Identify independent variable Y (If answer not stated as question -1 mark) (2)
6.5 To ensure a fair test. / to control the variable (1)
/ to ensure there is only one independent variable ¥
6.6.1 (DO NOT MARK)
6.6.2 (DO NOT MARK)
UPSCALE MARKS TO BE OUT OF 13 USING TABLE:
Mark out of 8 | Conversion out of 13
ab 2
2 3
3 5
4 it.
5 8
6 10
7 11
8 13
[13]
QUESTION 7
7.1.1. Addition/hydrogenation V (1)
7.1.2 Elimination/dehydrohalogenation ¥ (1)
7.2.1 Dehydration Vv (1)
7.2.2 Hydrohalogenation ¥ (1)
7.3.1 Hydrolysis ¥ (1)

7.3.2 (Mild) heat v

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### Page 21

Physicaldeanesoaded from Stanmorephysics.com March 2022 Common Test
Sc

Dilute strong base/NaOQH/KOH ¥ (2)
7.4 Concentrated strong base/NaQH/KOHY (1)
Wao) CHsCHCHCH3 ¥ + HzO ¥Y ——» CHsCHOHCH2CH3¥” BAL ¥
OR
CH2CHCH2CH3 ¥ + H20 Y¥ -——» CHsCHOHCH2CH3Y BAL ¥ (4)
[12]

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