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PROVINSIALE EKSAMEN
NOVEMBER 2023
GRAAD 10
NASIENRIGLYNE
FISIESE WETENSKAPPE: CHEMIE (VRAESTEL 2)
6 bladsye
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Physical Sciences Grade 10 P2 Gauteng November 2023 Memo
Grade 10 Physical Sciences Paper 2 memorandum from the Gauteng November Exam 2023 (Afrikaans), 6 pages. Read online or download the free PDF.
Physical Sciences · Grade 10 · Gauteng November Exam · 2023 · Afrikaans. Memorandum, 6 pages. Read online or download the PDF.
- Subject
- Physical Sciences
- Grade
- Grade 10
- Language
- Afrikaans
- Document type
- Memorandum
- Year
- 2023
- Exam period
- Gauteng November Exam
- Paper
- 2
- Curriculum
- CAPS
- Pages
- 6
- File size
- 342.0 KB
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FISIESE WETENSKAPPE: CHEMIE
NASIENRIGLYNE (VRAESTEL 2) GRAAD 10
VRAAG 1: MEERVOUDIGEKEUSE-VRAE
1.1 D ✓✓ (2)
1.2 C ✓✓ (2)
1.3 D ✓✓ (2)
1.4 C ✓✓ (2)
1.5 A ✓✓ (2)
1.6 B ✓✓ (2)
1.7 A ✓✓ (2)
1.8 B ✓✓ (2)
1.9 C ✓✓ (2)
[18]
VRAAG 2
2.1 2.1.1 OH– ✓ (1)
2.1.2 Si ✓ (1)
2.1.3 Ni ✓ (1)
2.1.4 C✓ (1)
2.1.5 Brons ✓ (1)
2.1.6 Br2 ✓ (1)
2.2 C het groter ionisasie-energie as Si. ✓ (1)
2
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FISIESE WETENSKAPPE: CHEMIE
NASIENRIGLYNE (VRAESTEL 2) GRAAD 10
2.3
3P4
3S2
2P6
2S2
1S2
✓ energievlak 1 ✓ energievlak 2 ✓ energievlak 3 (3)
2.4 2.4.1 Watervry. ✓✓ (2)
2.4.2 CuSO4∙x H2O → CuSO4 + xH2O
10g 6,4g ∆m = 10 – 6,4 = 3,6 g ✓
6,4
n (CuSO4) = m/M = ✓ = 0,04 mol
159,5
n(CuSO4) : n(H2O)
3,6 0,04 : 0,2
18 ✓ = 0,2 mol
n (H2O) =
1:5
∴x=5✓ (4)
[16]
VRAAG 3
3.1 Die temperatuur waarby ʼn vaste stof, indien dit voldoende hitte verkry, ʼn vloeistof
word. ✓✓ (2)
3.2 1,013 x 105 Pa of 101,3 kPa of 1 atmosfeer of 1 bar of druk by seespieël ✓ (1)
3.3 Termometer ✓ (1)
3.4 Vloeistof ✓ (1)
3.5 – Temperatuur bly konstant, faseverandering vind plaas (vloeistof na ʼn
gas). ✓
– Al die hitte word geabsorbeer om die intermolekulêre kragte te oorkom. ✓
– Kinetiese energie bly konstant, maar potensiële energie neem toe. ✓ (3)
3.6 – Etanol sal vinniger kook as water. ✓
– Etanol kook by (78 °C) terwyl water by ʼn hoër temperatuur kook, 100 °C by
standaarddruk. ✓
– Die watermolekules benodig meer energie om die sterker kragte te
oorkom. ✓ (3)
[11]
3
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FISIESE WETENSKAPPE: CHEMIE
NASIENRIGLYNE (VRAESTEL 2) GRAAD 10
,
VRAAG 4
4.1 Atome van dieselfde element met dieselfde aantal protone, maar verskillende
aantal neutrone. ✓✓ (2)
4.2 Sr ✓ (1)
4.3 2✓ (1)
4.4 – Die atoomradius neem af oor die periode en neem toe in die groep. ✓
– Stronsium se atoomradius is groter as magnesium s’n. ✓ (2)
(84×0,56) + (86×9,86) + (87×7) + (88×82,58)✓
4.5 Gemiddelde atoommassa =
100 ✓
= 87,71
≈ 88 ✓ (3)
[9]
VRAAG 5
5.1 Die eenvoudigste heelgetalverhouding van atome in ʼn verbinding. ✓✓ (2)
5.2 5.2.1 0,73 g ✓ (1)
5.2.2 m
n= ✓
M
1,09
n = ✓ = 0,09 mol C
12
0,18
n= ✓ = 0,18 mol H
1
0,73
n = ✓ = 0,046 mol O
16
0,09 0,18 0,046
: : ✓
0,046 0,046 0,046
2:4:1
Empirese formule = C2H4O ✓ (6)
5.3 Empiriese formule se molêre massa = 44 g.mol-1 ✓
88
verhouding = =2✓
44
Molekulêre formule = C4H8O2 ✓ (3)
[12]
4
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FISIESE WETENSKAPPE: CHEMIE
NASIENRIGLYNE (VRAESTEL 2) GRAAD 10
VRAAG 6
6.1 Na2CO3 + 2HCl → 2NaCl + CO2 + H2O ✓✓ (2)
6.2 Koolstofdioksied of koolstof(IV)oksied ✓ en CO2 ✓ (2)
6.3 6.3.1 CO2 ; H2O of HCl ✓✓ (Enige TWEE) (2)
6.3.2 NaCl ✓ en Na2CO3 ✓ (2)
6.4 6.4.1
✓✓ (2)
6.4.2
✓✓ (2)
6.5 M(Na2CO3) = (2 x 23) + 12 + (3 x 16)
= 106 g.mol-1 ✓✓ (2)
6.6 m
n = ✓
M
3
𝑛 = ✓
106
n = 0,028 mol ✓ (3)
6.7 N
n =N ✓
A
N
0,028 = 6,02 x 1023 ✓ N = 1,7 x 1022 formule-eenhede ✓
n(Na2CO3 ) : n (O)
1:3
1,7 x 1022 : 5,11 x 1022 suurstof atome ✓ (4)
[21]
5
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FISIESE WETENSKAPPE: CHEMIE
NASIENRIGLYNE (VRAESTEL 2) GRAAD 10
VRAAG 7
7.1 Die stofhoeveelheid wat dieselfde getal elementêre deeltjies (atome, ione,
molekules) bevat as wat daar atome in 12 g koolstof-12 is. ✓✓ (2)
7.2 45 cm3 of 0,045 dm3 ✓✓ (2)
7.3 Borreltjies/Opbruising van waterstofgas in die koniese fles ✓ (1)
7.4 V
n= ✓
Vm
0,045 ✓
=
22,4 ✓
= 0,002 mol of 2,0 x 10-3 mol ✓ (4)
7.5 n(Mg) : n(H2)
1:1
0,002 : 0,002 ✓
m
n= ✓
M
𝑚
0,002 = =✓
24
m = 0,048 g of 0,05 g ✓ (4)
[13]
TOTAAL: 100
6
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