# Physical Sciences Grade 10 P2 2022 Memo

> Grade 10 Physical Sciences Paper 2 memorandum from the Eastern Cape November 2022, 19 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/ec-physical-science-grade-10-november-2022-p2-and-memo/52d52bb7-dee7-4d8a-ba67-67605d8c7196
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 10
- Document type: Memorandum
- Year: 2022
- Exam period: Eastern Cape November
- Paper: 2
- Curriculum: CAPS
- Pages: 19

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## About this document

Physical Sciences · Grade 10 · Eastern Cape November · 2022. Memorandum, 19 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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### Page 1

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Province of the

EASTERN CAPE

EDUCATION

GRADE 10

MARKS: 100

TIME: 2 HOURS

This question paper consists of 13 pages, including 2 data sheets

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INSTRUCTIONS AND INFORMATION

1.

2.

10.

11.

12.

Write your FULL NAME and SURNAME on the ANSWER SCRIPT.

The question paper consists of 8 questions. Answer ALL the questions in the
ANSWER SCRIPT.

Start EACH question on a new page in the ANSWER SCRIPT.

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

Leave ONE-line open between two sub-questions for example ween
QUESTION 2.1 and QUESTION 2.2. oS:

You may use a non-programmable calculator. 9)

You may use appropriate mathematical instrume )

You are advised to use the attached DATA steers

Show ALL formulae and substitutions iat calculations.

Round off your final numerical ans\lers to a minimum of TWO decimal places.

Give brief explanations, motivations, et cetera where required.
Write neatly and eo
Ke
or
&
ee

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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 numbers
(1.1 to 1.7) in the ANSWER BOOK, e.g. 1.11 E. Each question has only ONE
correct answer.

1.1

1.2

Which one of the following is a mixture?

A Diamond

B Distilled water

Cc Vinegar @

D. Sodium chloride ew (2)

The heating curve (not drawn to scale) of a compound ishdwn below.

wv

Temperature (°C)

300

RS Time(s)
What would be the Xda state of the substance at 100°C ?
A. Solid @

B. Liqui >
Cc. Ga: w
one to liquid (2)

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1.3 When atom X of an element in Group17 (VII) ionises to become X° the...
A mass number of X increases.
B atomic number of X decreases
C number of electrons decreases
D

number of electrons increases (2)

1.4 The molecular formula of a certain carbon compound is Ca Hio O2.
Which one of the following can be the empirical formula of this compound?

A C2HeO
B  C2HaO2
C C2HsO
D C2HeOz
(2)
1.5 Which one of the following elements has the highest ionisation energy?
A Potassium
B Lithium
C Caesium
D Sodium (2)

1.6 Which one of the following statements is correct? 1 mole is equal to...
i) 44g of COz
ii) 32g of O2
iii) 14g of N2
A. i andiii
B. iandii
C iii
D_ i,ii and iii (2)

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1.7

Consider the Aufbau diagram of an element below.

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NM 3s
MN IM 2p
NY) 2s
NY) 1s

The element is a/an...

A. halogen

B. noble gas

C. alkali metal

D. alkaline-earth metal.

October 2022

(2)

[14]

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QUESTION 2

The graph below shows the heating curve of a pure substance under standard
pressure.

80

60
Temperature (°C)
40
30
20

t (min)
-20
-40
2.1 Define the term temperature. (2)
2.2 What is the boiling point of this substance? (1)
2.3. During which time interval/s will the ...
2.3.1 forces of attraction between the particles be at their weakest? (1)
2.3.2 particles vibrate at their fixed positions (1)
2.3.3 average kinetic energy of the particles remains the same (2)
2.3.4 Give a reason for your answer ion 2.3.3 (2)

[9]

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QUESTION 3

3.1

3.2

3.3

An element X has two isotopes. The percentage abundance and atomic
masses are given below.

Percentage abundance | Atomic mass
Isotope -1| 60.4% 69.5252
Isotope -2 | 39.6 % 70.9249

3.1.1,
3.1.2

3.1.3

Define the term isotope.

October 2022

Calculate the relative atomic mass of element X.

Write down the symbol for element X

The number of protons and electrons, the mass number and the
atomic number of Aluminium (Al) and its ion Al?* are shown in the
table below.

Some of these values in the table have been omitted. Write down
the letters (a-e) on the ANSWER BOOK and next to each letter

the number omitted.

NUMBER OF NUMBER OF MASS ATOMIC

PROTONS ELECTRONS NUMBER NUMBER
Al 13 (a) 27 (b)
Al (c) (d) (e) 13

The sp notation of an unknown element X is shown below.

1s72s?2p°3s73p®

For element X, write down the:

3.3.1
3.3.2
3.3.3

3.3.4

Number of valence electrons.

Period where this element is found on the periodic table.

Highest energy level in which electrons occur.

Symbol

(2)
(3)
(1)

(6)

(1)
(1)
(1)
(1)

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3.4 Write down the type of bond that forms between Chlorine and

Aluminium (1)
3.5 Draw the Aufbau diagram for Chloride ion (CI). (3)
3.6 Draw Lewis dot diagram to show the bond formation between

Aluminium and Chlorine (4)

[23]

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QUESTION 4

41

4.2

4.3

4.4

A section of the periodic table is shown below.

H He
Li | Be C IN O |} F |Ne
Na| Mg Al Si cl | Ar
K | Ca | Transition metals

Write down the SYMBOL as shown above, of the element that ..

4.1.1. is an alkaline earth metal in period 3 (1)
4.1.2 will form a anion with a charge of -2 (1)
4.1.3 has the smallest atomic radius (1)
4.1.4 has the highest electro negativity (1)
4.1.5 is a metalloid (1)

The electron affinity of chlorine (Cl) is 349 kJ-molt.
4.2.1 Define the term ‘electron affinity’. (2)

4.2.2 The electron affinity of element Cl can be represented by the
following incomplete equation:

Clg) +... > «+ 400 kJ-molt

Copy the equation above into the ANSWER BOOK and
complete it by filling in the blank spaces. (2)

Atoms of Francium (Fr) have the lowest energy required to remove an
electron from its atom to form positive ions.

Write down ONE word or term for the underlined phrase. (1)

Write down the formula of the compound formed when:

4.4.1 Li combines with O (2)
4.4.2 Ca combines with F (2)
[14]

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QUESTION 5
Consider the following reaction:
4Cus) + 02g) ———> 2Cu20¢)

5.1 Write down the chemical name of Cuz2O. (2)
5.2 Classify the above reaction as synthesis or decomposition reaction (1)
5.3. Using a calculation prove that the law of conservation of mass is valid for

the above reaction. (3)
5.4 20g of Cu completely react with 250cm* of hydrochloric acid solution of

unknown concentration according to the following balanced equation.

Cu (s) + 2HCI (ag) ————  CuCle (aq) + Hag)
5.4.1 Define the term concentration. (2)
5.4.2 Calculate the concentration of the hydrochloric acid solution. (6)
[14]

QUESTION 6

During a demonstration to show the difference between physical and chemical
change, the following experiments are carried out:

Experiment 1: Iron filings are heated with sulphur

Experiment 2: Iron filings are mixed with sulphur powder

6.1 Which one of the above experiments is an example for a chemical change?

Experiment 1 or 2?

6.2 Give a reason for your answer in 6.1

6.3

6.4

Write down a balanced equation for the change in experiment 2.

Name a method to reverse the change in experiment 2?

10

(1)
(1)
(3)
(1)
[6]

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QUESTION 7

The formation of sulphur trioxide (SOs) is represented by the following
balanced equation.

2 SO2(g) + O2(g) > 2SOs (g)

7.1 » Identify the element in the above equation (1)
7.2 Draw the Lewis dot diagram of the oxygen molecule (O2). (2)
7.3. During the above reaction 10 g O2 (oxygen) react completely with Sulphur
dioxide (SOz). Calculate the:
7.3.1 Number of moles of O2 reacted (3)
7.3.2 Theoretical yield of SOs (g) (4)
7.3.3 Percentage yield if 40g of SOs is produced at the end
of the reaction. (3)
[13]
QUESTION 8

An inorganic compound has the following percentage composition.43.39% Sodium
(Na), 11.32% Carbon (C) and 45.28% Oxygen(O)

8.1 Define the term empirical formula. (2)
8.2 Determine the empirical formula of this compound. (5)
[7]

TOTAL:100

a1

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October 2022

TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES

NAME/NAAM SYMBOL/SIMBOOL VALUE/WAARDE
Avogadro’s constant Na 6,02 x 1023 mol

Avogadro-konstante

TABLE 2: FORMULAE/TABEL 2: FORMULES

c=

<|35/2/3

orlof c= im
MV

12

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() (ly ay (yy) Ot)
1 Atomic number f2.|
KEY/SLEUTEL
_H SLEU' Atoomgetal He
“4 a 4
3 4 Ss 5 6 7 ca) 10
. Electronegativity Symbol
oli |,Be Etektronegatiwiteit 7 CU }-Simboo! eB »C |.N .O QF | Ne
v7 |-9 63,5 st 42 |g te 19 | 20
mW | 12 vatbe ao 13/14 | 15 | 16 | 17 *| 18
oNa ly Mg Approximate relative atomic mass wAe |.Si P |S Ce | Ar
323 \K24 Benaderde relatiewe atoommassa “27 |-28 534 132 935, 5) 40
19 | 20 | 24 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 34 | 32 | 33 | 34 | 35 | 36
aK |,Ca Sc |,Ti .V |_Cr |.,Mn|,Fe |,Co Ni |,Cu |.Zn |.Ga |,Ge |.As ,Se Br | Kr
239 |-40 (45 (mas i514 (“52 |-55 |rs6 |s9 [59 |-63,5\-65 (“70 (“73 |N75 [N79 N80 | 84
37 | 38 | 39 | 40 | 44 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49: «| 50 | 541 | 52 | 53 | 54
e@Rb |,Sr ,Y (Zr Nb |,Mo |,Tc |,Ru |yRh Pd |,Ag |.Cd j.In |.Sn |,Sb _Te | Xe
ese |-ss a9 91 | 92 [96 [F101 |N103 S406 |-408 [112 [4145 [149 [122 S128 127 | 134
55 | 66 | 57 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86
Cs |,Ba La Hf Ta | W | Re| Os| Ir | Pt | Au| Hg |,T@ |.Pb |,Bi Po |,At | Rn
2133 |9137_| 139 |179 | 181 | 184 | 186 | 190 | 192 | 195 | 197 | 201 [204 “207 |r209 [NN
87 | 88 89
5 Fr je. Ra Ac 58 [59 «[60 «[61 [62 [63 [64 [65 [66 |é7 [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 61 62 83 64 95 6 7 98 99 00 401 102 [103
Th Pa UU Np |Pu Am (Cm Bk (Cf Es Fm Md No Lr
232 238

13

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Province of the

EASTERN CAPE

EDUCATION

OR TAMBO INLAND DISTRICT

GRADE 10

MARKS: 100

These marking guidelines consists of 6 pages.

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QUESTION 1
1.1 C¥v
1.2 BYY
1.3 D¥vv
1.4 Cv¥v
15 BYY
16 BYY
1.7 D¥vv [14]
QUESTION 2
2.1 Measure of the average kinetic energy of the particles in a substancev ¥
(2)
2.2 30°CV (1)
2.3.1 30-40 minutes v (1)
2.3.2 0-5 minutes Vv (1)
2.3.3 5-10V and 20-30 minutes v (2)
2.3.4 During a phase change the heat energy supplied is used to overcome
the intermolecular forces.“ Therefore the average kinetic energy of the
particles remains the same. ¥ (2)
[9]
QUESTION 3
3.1.1 Atoms with the same atomic number ~ but different mass number.” (2)
3.1.2 Relative atomic mass = (69.5252 x 60.4) ¥+ (70.9249 x 39.6) v
100
= 70.08 (3)
3.1.3 Gav (1)
3.2 a) 13v (1)
b) 13” (1)

c) 13v (1)

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d) 10v (1)
e) 27¥ (1)
3.3.1 BY (1)
3.3.2 Period -3 ¥ (1)
3.3.3 3v (1)
3.3.4 Arv (1)
3.4 lonic bond ¥ (1)
3.5
tty ty)
| v
tytyty
in | L
(fy) (3)
1
3.6 Al» ¥ +3 “cl? ¥———> Al**v+ 3 | v (4)

[23]

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QUESTION 4
4.1.1 Mgv
41.2 Ov
4.1.3 Hv
4.1.4 FY
4.1.5 Siv (5)
4.2.1. Energyseleased when an electron is added to an atom in the gaseous

State to form an anion. vv (2)
4.2.2 Chtev—s Cl +349kJ molt v (2)
4.3 lonisation energy “ (1)
4.4.1 LiO0 vv (2)
4.4.2 CaFovv (2)

[14]

QUESTION 5
5.1 Copper(!) oxide. VY” (2)
5.2 Synthesis reaction “ (1)

5.3 (4x 63.5) + (2x16) Y = (4 x 63.5) + (2 x16) ¥

286 g.molt = 286g.mol! v (3)
5.4.1 Number of moles of the solute per litre of the solution. vw (2)
542 n= m = 20 ¥ = 0.3149 mole
Mv 63.5

n (HCl) = 2 x 0.3149 = 0.6299 mole ¥

c= ne v
v
c= 06299 Y = 259moldm? v
0.25 (6)
[14]

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QUESTION 6
6.1 Experiment 1 ¥

6.2 New substances are formed v/ Bonds are broken and new bonds are
formed

6.3 Fe()+S ()“— ”_ FeS ¥ Balancing “

6.4 Separate the iron filings using a magnet”

QUESTION 7
7.1 OQov
7.2 02° 6 6 valence electrons ¥
0° 00 . .
Sharing 2 pairs ¥
7.3.1 n = v=10 VY = 0.3125 moles v

m —
“ 32

7.3.2 n (SOs) produced = 2x 0.3125” = 0.625 moles

m (SOs) produced

nx MY = 0.625 X 80Y = 50g ¥

7.3.3 % yield= Actual yield x 100 Y= 40 x 100 Y= 80%VY

Theoretical yield 50

(1)

(1)
(3)
(1)
[6]

(1)

(2)

(3)

(4)

(3)
[13]

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QUESTION 8

8.1 The simplest whole number ratio of elements in a compound. Vv”

(2)

8.2
Element | g/100g n=m/M Simplest ratio
Na 43.39 43.39 | 23 = 1.8867” 2°74
c 11.32 11.32 /] 12 = 0.9433 v 1 >
oO 45.28 45.28 | 16 = 2.83 v 3 JU

Empirical formula is NazCOs ¥

[TOTAL 100 MARKS]

(5)
[7]

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