# Physical Sciences Grade 11 P2 March Test 2018 Paper & Memo

> Grade 11 Physical Sciences Paper 2 question paper and memo from the March Test 2018, 12 pages. Read online or get the free PDF download.

- Page: https://www.hlayiso.com/library/phy-mar-p2-qp-memo/2e66767a-53f1-4a19-9998-dee968a81434
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 11
- Document type: Question paper and memo
- Year: 2018
- Exam period: March Test
- Paper: 2
- Curriculum: CAPS
- Pages: 12

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 P2 March Test 2018 Paper & Memo](https://www.hlayiso.com/library/phy-mar-p2-qp-memo/2e66767a-53f1-4a19-9998-dee968a81434)

## About this document

Physical Sciences · Grade 11 · March Test · 2018. Question paper and memorandum, 12 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
                testpapers.co.za

### Page 2

Prysical seroes P>DOWNIOAdeS from hlayiSOc@emMes mach 2018

INSTRUCTIONS AND INFORMATION TO CANDIDATES

1 Write your name on the ANSWER BOOK.

4. Answer ALL the questions in the answer book

5 You may use a non-programmable calculator

6 You may use appropriate mathematical instruments.

7. Number the answers correctly according to the numbering system

used in this question paper.

8 YOU ARE ADVISED TO USE THE ATTACHED DATA SHEETS.

9 Give brief motivations, discussions, et cetera where required.

Copyright Reserved Please Turn Over

### Page 3

Physical Sciences P2 DOWNloaded from hlayise@.GQMi sarc 2018

NSC
SECTIONA

QUESTION 1: MULTIPLE- CHOICE QUESTIONS
Four options are provided as possible answers to the following questions.
Each question has only ONE correct answer. Write only the letter (A - D) next to the
question number (1.1 - 1.4) in the ANSWER BOOK. Eg 1.5 A
4.1. Which one of the following statements concerning bond energy is NOT TRUE?
A. Bond energy increases as bond length decreases
B. Bond energy increases as atomic radius decreases

C. The higher the bond energy, the stronger the bond

Dz Bond energy is smaller in multiple bonds than in single bonds (2)

1.2. The graph below shows the potential energy changes of a system of 2 hydrogen
atoms as the distance between the 2 hydrogen nuclei changes.

Ep o | 0,074 distance apart (nm) A
(kj/mol)

-436

Which of the following correctly represents the values for the bond energy and bond length
respectively?

| Bond energy (kJ.mol”) | Bond length (nm)

A 0.074 ; - -436

(B. 436 0.074 -

[C. | 740x107 _ -436 -
_D _-436 7.40 x 10%!

Copyright Reserved Please Turn Over

### Page 4

Physical Sciences PDOWNIOaded from hlayiSOGOMes march 2018

NSC

1.3. The shape of the PCls molecule as predicted by the VSEPR theory is:
A. Trigonal Bi-pyramidal
B. Octahedral
en Trigonal planar

D. Trigonal pyramidal (2)

1.4. Which one of the following electron-dot structures represents a non-polar molecule?

xX H

A H¥ Cl 3 B. xe
xx HxCx%H

xe

H

xXx xx
c. Hs SX D H S0%*

H H

(2)

TOTAL : SECTION A :[8]

Copyright Reserved Please Turn Over

### Page 5

physical Sciences P>DOWNIOadeG from hlayiSOcGamMes march 2018

NSC
SECTION B
INSTRUCTIONS AND INFORMATION
4. Answer all questions.
2. Show the formulae and substitutions in ALL calculations
3 Round off your numerical answers to a minimum of TWO decimal places.
QUESTION 2

An experiment is carried out to determine whether potassium nitrate and iodine crystals are
soluble in each of the three solvents, water, ethanol and xylene. The results recorded in
the table below are incomplete.

[ Crystal ____| Water ; Ethanol Xylene |
Potassium nitrate A B |
| lodine Soluble | c - |

2.1. Refer to the table above. Write down the letters A, B, and C and next to each letter
indicate whether the crystals are SOLUBLE or INSOLUBLE in the solvents.

2.2. By referring to types and the strength of intermolecular forces, explain why iodine
crystals are soluble in ethanol.

2.3. Alearner wishes to prepare a solution of lodine-water. Instead of adding iodine to
water, he first adds the iodine to the ethanol and then adds this mixture to water
Fully explain the reasoning behind this approach.

(3)
[9]

Copyright Reserved Please Turn Over

### Page 6

Physical Sciences P2 DOWNloaded from hlayisos@One warch 2018

QUESTION 3

Consider the following molecules and answer the questions.

3.1.

3:2.

3.3.

3.4

3.5.

SO ; CO, ; BF3 ; NH;
Draw the Lewis structure for the SOz molecule. (2)
BF3 and NHs both contain 3 bonds around the central atom. The BF3 molecule is
non-polar while the NH3 molecule is polar. Account for this difference between the

two compounds using the VSEPR theory. (4)

Determine with the aid of a calculation, whether the C — O bond in the CO» molecule
is POLAR or NON-POLAR. (2)

The boiling point of SO, is -10 °C and that of COz is - 78 °C. Explain why the
boiling point of SOz is higher than that of CO2 by referring to the types of intermolecular
forces and energy. (4)

NHg forms a dative covalent bond with the H* ion to form NH,".

3.5.1. What is a dative covalent bond? (2)

3.5.2. Use Lewis dot structures to show the bonding in the NH,' ion. (2)
3.5.3 Write down the FORMULA of another compound that has a molecular

shape similar to the NH4* ion (1)

[17]

Copyright Reserved Please Turn Over

### Page 7

Physical Sciences P2 DOWNIoaded from hlayiSQ@.GOmnar march 2018

NSC

QUESTION 4

The graph below shows the boiling points and molar masses of the hydrides of group 6.

4.1

4.2

4.3

44

4.5.

4.6

Boiling Points of Group 6 hydrides
oO 200
L 150 110
< 100 ,
i a H,Te
2 O
sm 50:
S 100 HS Hse
© _ 150
2004-4 4 7-4
0 20 40 «6080 100 120140
Molecular mass (g.mol”)
Define boiling point. (2)
Explain why the boiling points increase from H2S to H2Te. (2)
The boiling point of water is much higher than that of the other hydrides.
Explain fully why this is so. (3)
Which hydride will have the highest vapour pressure at -100°C? Give a reason. (2)

The density of ice is different to that of water. Explain how this is beneficial to life

on earth. (3)
The density of water is 1g.mol' at 25 °C. Calculate the number of water molecules in

0,5 dm* of water. (4)

[16]

TOTAL : 50

Copyright Reserved Please Turn Over

### Page 8

YISO.GCON march 2018

NSC

Physical SciencesP2 Downloaded from hla

gece cA A
47) ON) PW |W] Sa] 30 Ya | wo; wy nd} dN] nm) ed) UL
Or col LOL 001 66 86 26 96 s6 v6 £6 (49) 16 06
GLb eLb 69L LOL SOL cob 6SL ZS1 ZSb Ost byl LyL OvL
N71) GA | WL] 4a | OH | AQ Gh | PD | ny Wg | Wd] PN] Id | 8d azz
bL OL 69 89 219 99 s9 v9 eo 4:) b9 09 6S 8S oy ey 7 44 2
68 88 28
602 L0Z | v0z LOZ Z6L S6L | céL 06+ |98-F | v8L b8L 6ZL 6eL Leb cel
ud |WE)OdS)!9 s4ds/eaLsi6H inv iid | 4 sO (ey MM eL SHS eT |eag gisos
98 Ss v8 €8 (4:) L8 08 6L 82 ZL 92 GL vl eL (as Zs 9S Ss
heb Leb 82L ecb 6LL SLL ebb 80L 901 c0L LOL 96 rAd) 16 68 88 98
3X 1 SPL ass uss) us pos 6veipdS ua sinysoLsows an |4Z2 A gl4S siqu ¢
|S €s es LS os 6y 87 Ly ov SY vy ev (47 Ly ov 6E ge Ze
v8 038 62 GL cL OL s9 s‘e9 6S 6s 9s Ss es LS 87 SY Ov 6E
YM | dq f)eS F Sv 5/99 Ze 3) UZ SND S| IN B09 F] 84 SUING AOS a ib 29S BeOS &
9€ Ge ve ce (43 Le o¢ 62 82 Px4 92 GZ ve Lx4 (44 4 | 02 6L
Or [s‘ce ze be 87 prs PSSEUIWIOO}E aManejas apsapeuag | ¥e &@
Wy (302) S 5 Sis slavwa SSE SIWOZe SAI}eIO1 SJeEWxoddy (BW 2) en &
ay iat fo ish op fe t a fw
oz | 6b {ot [or [ae fu —»| s‘e9 6 Z
8N slo ¢ 2 x jooquis “| ng 2 + qeympeBbauo.nya/z egene
ol 6 8 L 9 S joquiAs a AyaneBauos399];9 | ¢ ¢
v F b
3 X
H jeyaBuroojy TALNITSIAIY Hos
Le | Jequinu o1wopy L
(ia) (A) A) (A) Cs) (i) (0
8L ZL OL SL vl eb rAd LE OL 6 8 Z 9 S v £ z L

SLNAW31S JO ATaVL DIGOldAd AHL :€ FIEVL

### Page 9

physical science DOWNIOAd Ed From hlayiSO.CAMs:s common rest

CONSTANTS

AVOGADRO CONSTANT 6.02 X 10%

EQUATIONS
n=m/M
D=m/V

n= N/Na

Copyright Reserved

### Page 10

Downloaded from hlayiso.com

### Page 11

1800 Wn} aseaig paniasas jyBuAdog 49n0 WIM aseaig paniasai jyBuAdog

(vy) SOINDB|OW ZOS a}e1edes

0} pepeeu si» AOJoUd 810 pue $80J0) LOPUCT UY] J@BUORS are S80J04 a[0dp-a|0d1q

7 'S80J0}

UOPUOT SI} Sa|NdSjOW 7QD UBEMJaq S910} JejNDE|OWAIU! ay | “SaINdajoW ZO Usanyeq
* $8910} 8|0dip -s8jodip YIM ajndajOWw 4ejod e osje SI pue »ssew Jejow waybiyeseyzqg y¢E
“seabed ¢ Jo sjsisuoa auyapind Bunyew siyy

(Z) / dejod si puog ayy ‘9 ueY)

Jajeai6 si A ajeSeuoqjogja ul SOUSTOYIP Ou) a0ulS »L= S7-GE=GNa EC

(r) lejod ajnoejow sayew sed suo) Aq suosoaja Jo sted Papuog 40 uojsindey
aed aud] aUO Sey HN
/4N0 padeds AlUsAo dJe spuog ¢ » “sued su] OUSeYfyg ~ ne

4 EE)

ee yx oe

“Ve
€ NOILSAND
[el SIV SISILYA9D YOINSS
(e) Pasedaud oq Ued J8}eM aUIpo! soUsY / s8}2m U! aIgnjos si |oUeY)O - WNOLLVN
A JOUEUA U! ajqnjos s! auIpor -
» J9\eM Ul Bqniosul si suipoj- gz

(e) ‘908|d Seye} UOIN|OSsIP pue SWOD19A0 |q UD $9004 JeINDB|OWWEIUL
SU} “TPBUSAS 70 Jeps0 JETUIIS Jo a4e Se010j JeINSejOWWIA\UI BLY BdUIS » “SBDJ0}
YOHUST SEY SUIpo| (x “S8d10} UOPUOT PUE S800 S[OGIP— S|OdIp yjoq sey joueyjyy “zz

ANITAGINS ONIMYVA

» 9|GNIOS -D 8L0Z HOUVIN

peigniosu| -g

41sil NOWANOS
A Alanios -y “LZ

Downloaded from hlayiso.com

2 NOLLSANO (AMLSIINSHD) 2d SONAIOS TWOISAH

() = 2x a na
AAW EL Sas
cea CL Vvolddv HLNOS JO S11ENnday “T4 v
ved bb uoeonp® jo juawpedeg jeyen-ninzemy TENS y)
-NOLLSaND UOReONPA MES

LL PBI -OSN

8102 YEW Ise] UOWWOR Zz @d seouens jeaiskyg | ]

### Page 12

Downloaded from hlayiso.com

Physic:

Sciences P2 E} .nmon Test March 2018
NSC- Grade 11

3.5.1 The bond formed when an empty valence shell of an atom shares a lone pair of

electrons from another atom v ~ (2)
H +
3.5.2 xx
H3N SH
x vv (2)
H
3.5.3 CHa or CC&u vv (1)
17]
QUESTION 4
4.1. The temperature at which the vapour pressure of a liquid is equal to atmospheric
pressure. v ¥ (2)
4.2 From H2S to H2Te, the molar mass increases, “causing an increase in strength of
Van der Waals forces Y More energy is needed to separate the molecules. (2)
4.3. Water has hydrogen bonding “between molecules. The other hydrides have
dipole- dipole forces v between molecules. Hydrogen bonding is stronger than
dipole-dipole forces. v More energy needed to separate water molecules. (3)
44 HSV Lowest BP. (2)
4.5. Density of ice is less than density of water. v Ice floats on water providing an insulating
layer Vfor aquatic life to exist. v OR Water freezes from top down” and captures heatv
allowing aquatic organisms to survive (3)
46 D=m/V
1=m/0.5
m = 500g
n=m/M ¥
= 500/18 v
= 27.78 mol
N= nxNa
= 27.78 X6.02x 10%
= 1.67 x 10 2 molecules ~ (4)
{16}
TOTAL: 50

Copyright reserved

## Related documents

- [PHY-NOV-P2-QP and MEMO](https://www.hlayiso.com/library/phy-nov-p2-qp-and-memo/18b69479-5bb0-43f1-b3c2-beb1ccecbd90) — Physical Sciences · QP + Memo · 2018
- [PHY-P2-March-QP & Memo-2020](https://www.hlayiso.com/library/phy-p2-march-qp-memo-2020/558e5225-af79-4114-b059-2a5778af03c1) — Physical Sciences · QP + Memo · 2020
- [PHY-P2-MARCH-QP & MEMO](https://www.hlayiso.com/library/phy-p2-march-qp-memo/b80d144a-6a0f-4278-9f7b-1941e9422c45) — Physical Sciences · QP + Memo · 2016
- [Gr11 Phy P2 June 2018 Question Paper](https://www.hlayiso.com/library/gr11-phy-p2-june-2018-question-paper/47e18220-982b-4312-8d1a-23e4324550cb) — Physical Sciences · QP · 2018
- [Gr11 Phy P2 (Afrikaans) June 2018 Question Paper](https://www.hlayiso.com/library/gr11-phy-p2-afrikaans-june-2018-question-paper/fd9f92c8-f4d1-4104-926b-48e832bea015) — Physical Sciences · QP · 2018 · Afr
- [Physical Sciences P2 Grade 11 Nov 2018 Eng](https://www.hlayiso.com/library/physical-sciences-p2-grade-11-nov-2018-eng/d0518374-65a3-4ce2-9d2a-a1a55228d2e2) — Physical Sciences · QP · 2018 · 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 SCIENCES P2 GRADE 11 MEMO NOVEMBER 2025 ENG & AFR watermark](https://www.hlayiso.com/library/physical-sciences-p2-grade-11-memo-november-2025-eng-afr-watermark/fb381415-e8f2-4b7c-86d6-7d7c27b3a4f4) — Memo · 2025 · 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
- [PHYSICAL SCIENCES P2 GR11 MEMO 2024 ENG AFR watermark](https://www.hlayiso.com/library/physical-sciences-p2-gr11-memo-2024-eng-afr-watermark/f8ef6058-1783-44bd-b372-4b15bc7c5c5c) — Memo · 2024 · Eng
- [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
- [PHYSICAL Sc. P2 QP GR11 NOV 2024 mod 2 AFR D watermark](https://www.hlayiso.com/library/physical-sc-p2-qp-gr11-nov-2024-mod-2-afr-d-watermark/bbef0c4c-a5ac-4c63-b922-d8a9b7e96678) — 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.