# Physical Sciences Grade 10 P2 2018 QP & Memo

> Grade 10 Physical Sciences Paper 2 question paper and memo from the KwaZulu Natal June 2018, 16 pages. Read online or get the free PDF download.

- Page: https://www.hlayiso.com/library/june-p2-qp-and-memo-2/ae58a0f7-5cbb-4c4b-89fa-350d793fb620
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 10
- Document type: Question paper and memo
- Year: 2018
- Exam period: KwaZulu Natal June
- Paper: 2
- Curriculum: CAPS
- Pages: 16

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## About this document

Physical Sciences · Grade 10 · KwaZulu Natal June · 2018. Question paper and memorandum, 16 pages. Read online or download the PDF.

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### Page 1

———Dawnloaded fromhlaviso.com

education

Department:
Education
PROVINCE OF KWAZULU-NATAL

. PHYSICAL SCIENCE: CHEMISTRY (P2) ‘
* COMMON TEST :
: JUNE 2018 5

NATIONAL
SENIOR CERTIFICATE

GRADE 10

MARKS: 100
TIME: 2 hours

This question paper consists of 11 pages and a Periodic Table.

Copyright reserved Please turn over

= score aaa

### Page 2

Physical Sciences P2

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Grade 10

INSTRUCTIONS AND INFORMATION

10.

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

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

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

You may use a non-programmable calculator.

You may use appropriate mathematical instruments.

YOU ARE ADVISED TO USE THE ATTACHED DATA SHEET.

Show ALL formulae and substitutions in ALL calculations.

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

Write neatly and legibly.

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### Page 3

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Physical Sciences P2 June 2018 Common Test

Grade 10

QUESTION 1: MULTIPLE- CHOICE

Four options are provided as possible answers to the following questions. Each question has
only ONE correct answer. Write down only the letter (A — D) next to the question number
(1.1 — 1.7) in the answer book, for example 1.8 D.

14 Which term describes ability of metals to stretch into thin wires?

A Brittle

B Ductile

Cc Malleable

D Tensile strength (2)
1.2 Silicon can be classified as a...

A Metal

B Metalloid
Cc Non metal
D

transition metal (2)

1.3. Solid carbon dioxide turns directly into a gas at room temperature. This process
is called...
A Boiling
B Deposition
Cc Sublimation
D Evaporation (2)

1.4. The type of bond where both the bonding electrons come from the same atom is

described as a/an ...

A lonic Bond

B Dative bond

Cc Covalent bond

D Metallic bond (2)

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Physical Sciences P2 June 2018 Common Test

Grade 10

1.5 Which one of the following reactions can be classified as REDOX reaction?

Zn(s) + 2HC£ (aq) + ZnCte(aq) + He(g)

KC? (aq) + AgNOs (aq) —* KNOs (aq) + AgCE (s)

Cu?* (aq) + O?(aq) + CuO (s)

ZnC& (aq) + CaSOa (aq) > ZnSOa (aq) + CaCfe(aq) (2)

0 O WP,

1.6 The energy released when an electron is added to an atom or molecule is
called ...
A Electronegativity
B Electron affinity
Cc Enthalpy change
D lonisation energy (2)

17. The separation technique most suitable for the separation of an oil-water mixture
in the laboratory is...
A Decanting
B Chromatography
Cc Magnetic attraction
D Fractional Distillation (2)
[14]

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Grade 10

Physical Sciences P2

QUESTION 2

2.1 The following graph, not drawn to scale, represents the cooling curve of a

substance with a boiling point of 95°C.

150
2
2
5
to t ie ts Time (min)
2.1.1 Define temperature. (2)
2.1.2 Name the phase of the substance between times to and ti. (1)
2.1.3 Write down the freezing point of this substance. (1)
2.1.4 Name the process taking place between times ti and tz. (1)
2.1.5 Use Kinetic Molecular theory to explain the process mentioned in (2)
question 2.1.4.
2.1.6 In what state of matter is the substance after time ts? (1)
2.2 Consider the following statements, and answer questions that follow:
i. Boiling is the same as evaporation due to associated phase change.
li Evaporation and boiling have the same phase change, but boiling
occurs at specific temperature.
2.2.1 Define boiling point. (2)
2.2.2 Which statement is correct? Explain. (3)
[13]

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Physical Sciences P2 Downloaded from hlayiso,corm Common Test

Grade 10

QUESTION 3

Bid.

3.2

3.3

3.4

Study the following processes and answer the questions that follow:

Heat
A:  H20js) ie Hew)
B:  C+0%) 9 ————> CO2g)
Heat

3.1.1 Identify the process that represents a chemical change.
3.1.2 Identify the process that represents a physical change.
3.1.3. Are the above processes endothermic or exothermic? Provide a reason

for the answer.

Name the following compounds
3.2.1 HBr

3.2.2 CCh

3.2.3 NaeS203

Balance the following reactions:

3.3.1 Fe +O2-> FeeOs

3.3.2 C2He + O2-— CO2z + H20

3.3.3 NaeSOz + Ba(NOs)2 — BaSOs + NaNOs

Consider the following chemical reaction:
2HNOs (aq) + Ca(OH)2 (aq) - Ca(NOs)e(aq) + 2H2O(I)

3.4.1 State the law of conservation of mass.
3.4.2 Show that the reaction obeys the law of conservation of mass.

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(2)
(3)
[20]

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Physical Sciences P2 June 2018 Common Test

Grade 10

QUESTION 4
4.1. Magnesium is an element, with an atomic number of 12 and naturally exists
as isotopes.

4.1.1 What are isotopes? (1)

Magnesium consist of 3 naturally occurring isotopes, “Mg, ?5Mg and 26Mg

| Isotope — % abundance | Atomic Mass number

i 2g 78.99 23,985
= 25g 24.959 |

LC 2eMig 41.01 25,983
4.1.2 Name the group in which magnesium is found. (1)

4.1.3 Name the element that has the same number of electrons as there

are core electrons in magnesium. (1)
4.1.4 Calculate the number of neutrons in 26g. (1)
4.1.5 Calculate the percentage abundance of 25Mqg. ()
4.1.6 Determine the relative atomic mass of Magnesium. (4)

4.2 Oxygen exists naturally as a diatomic molecule:
4.2.1 What is a diatomic molecule? (2)
4.2.2 Give the valency of oxygen in its natural state. (1)
4.2.3 State Pauli’s Exclusion Principle. (2)
4.2.4 Write down the electronic configuration for the oxygen atom. (2)
4.2.5 Name the type of bonding that takes place in the oxygen molecule. (1)
[17]

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### Page 8

Physical Sciences P2

QUESTION 5

Grade 10

5.1. Define an ionic bond.

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June 2018 Common Test

5.2 Draw the Lewis structures for the following substances.

5.2.1 COz (2)
5.2.2 NHs (2)
[6]
QUESTION 6
Grade 10 learners carry out two chemical reactions in aqueous solutions.
Test tube A has a solution of sodium carbonate and test tube B has a solution of
sodium sulphate.
Into each test tube a small amount of barium chloride solution is added.
A a Barium chloride —™, B
Sodium Carbonate Sodium Sulphate
The results are shown in the table below.
Test tubes Reagents Observations |
A. BaCk: (aq) and NaeCOs(aq) | White solid forms
B. BaCtle (aq) and NazSO4(aq) | White solid forms |
6.1. What is meant by an aqueous solution? (1)
6.2 Name the type of reaction taking place in both test tubes (1)
6.3 Write down the chemical formula of the salt produced in test tube A. (2)

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Physical Sciences P2 June 2018 Common Test

Grade 10

6.4 Nitric acid, HNOs, is now added to both test tubes.
State the observable changes that take place in:

6.4.1 test tube A (1)
6.4.2 test tube B (1)
6.5 Write down the balanced equation for the reaction that explains the
observation in question 6.4. (3)
[9]
QUESTION 7

Two solutions are provided as shown below:

A B
Sugar Solution Sodium Chloride Solution
7.1. Define a solution. (2)
7.2 Write down the chemical formula for sodium chloride. (1)
7.3 Give a common name for sodium chloride. (1)

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### Page 10

Physical Sciences P2
Grade 10

7.4 The following experimental set up is used to determine the electrical conductivity of

the above solutions

ny |

7.4.1. What physical quantity is measured by component X?
7.4.2 Define an electrolyte.

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une 2018 Common Test

Electrode

Solution Aor B

7.4.3 \dentify the solution (A or B) that will give a reading on X? Give a reason

7.4.4 How would an INCREASE in CONCENTRATION of the solution identified in

question 7.4.3 affect the reading on X?

(Choose from: INCREASES; DECREASES or REMAINS THE SAME)

Explain?

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(3)
[12]

### Page 11

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Physical Sciences P2 June 2018 Common Test

Grade 10

QUESTION 8

8.1 The graph below shows the first ionization energies of group 2 elements.

TT
ae
|
kJimor! 79° |
|
aa
500 7 |
300
ee me ee SY fa Group 2 elements
8.1.1 Define first ionization energy. (2)
8.1.2 Describe the trend in the first ionization energies, of group 2 elements. (2)

8.2. The first ionization energy of Na (Sodium) is 496 kJ.mol, whilst the first
ionization energy of Mg (magnesium) is 738 kJ.mol!.
Explain this difference. (3)

8.3 For each of the following questions, choose from:
INCREASES, DECREASES, REMAINS THE SAME

8.3.1 How does the atomic radius change on going across a period? (1)
8.3.2 How does the electronegativity change on going down a group? (1)
[9]

TOTAL MARKS: — [100]

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### Page 12

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Physical Sciences P2 3
Grade 10- Memorandum

QUESTION 3

3.1.1 BY

3.12 Av

3.1.3. Endothermic”’, in both processes heat energy was added.”

3.2.1 Hydrogen bromide ¥

3.2.2 Carbon tetrachloridey ¥

3.2.3 Sodium thiosaphate v¥

3.3.1 4Fe + 302 ¥— 2Fe203 ¥

3.3.2 2C2He + 702 ¥—» 4COz + 6H20Y

3.3.3 NazSO4 + Ba(NOs)z “— BaSOz + 2NaNO3 ¥

3.4.1 Matter cannot be created or destroyed but is transformed from one form to
another’ v

3.4.2 Mreactent =2x1+2x14+2x3x16 + 40 + 2x16 +2x1 Y= 160 g.mol!
Moproducts =40 +2x14 +2x2x16 +2x2x1 +2x16 ¥= 160 g.molt ¥
QUESTION 4

4.1.1 Atoms of the same element (having the same number of protons), with different
number of neutrons. ¥

41.2 Alkali Earth metals¥

4.1.3. Neon Nev

4.1.4 N=26-12= 14 neutronsY

4.1.5 %lg = 100 - (78.99 +11.01)

= 10% ¥

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nmon Test June 2018

Please Turn Over

Physical Sciences P2 4
Grade 10- Memorandum

Common Test June 2018

416 RAN. = M*Mg x % abundance = MPMg x % abundance + MMg x % abundancev (4)
— 100% 100% 100%
(1) = 23,985 x78,99 + 24,959 x 10% 4 25,983 x11,01% Vw
(1) 100% 100% 100%
(2) = 24.302 g.moltv
(4) 4.2.1 Molecule that consist of 2 atoms from the same element. ¥ ¥ (2)
(2) 422 27 (1)
4.2.3 The maximum of 2 electrons in an orbital provided that they spin in opposite
(2)
directions. v (2)
(2)
(2) 4.2.4 1s'2s2%pt vv (2)
(2) 4.2.5 Covalent bondY (1)
117)
(2)
QUESTION 5
(3) 5.1 Anionic bond is a chemical bond whereby electron(s) is transferred fromone (2)
[20] atom to the otherv v
5.2.1 id (2)

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