Physical Sciences Grade 12 Limpopo March Test 2025 Memo

REPUBLIC OF SOUTH AFRICA —<—— DEPARTMENT OF EDUCATION NATIONAL SENIOR CERTIFICATE GRADE 12 Pe a 4 ® ia 1" tt] 1" PHYSICAL SCIENCES/FISIESE WETENSKAPPE = " a CONTROL TEST 1 MARKING GUIDELINE/KONTROLE TOETS 1 2 NASIENRIGLYNE i 17 March/Maart 2025 tt] A - ee ee ee ee eo MARKS/PUNTE — : 100 This marking guideline consists of 12 pages/Hierdie nasienriglyne bestaan uit 12 bladsye Copyright reserved Please turn over

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 1 1.4 Avv 1.2 Dv¥v 13 BY¥v 14 Bvyv 15 BvYv 16 Bvv 17 Avv 18 Cv¥v 19 Cvv 1.10 Avv [20] Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 2 2.1 J N Fv v Fav ACCEPTABLE NOTES/NOTAS LABELS/AANVAARDE BYSKRIFTE Fn: Normal/Normaal ONE mark for each force represented Fg: w/weight/force due to | by an arrow with a correct label/Een gravity / gewig/krag agv | punt vir elke krag wat deur ‘n pyl met ‘n gravitasie korrekte byskrif voorgestel word Fa: 10 N/Applied Penalise ONCE for each of the force/Toegepaste krag _| following:/Penaliseer EEN KEER vir elk van die volgende: e No arrow/geen pyl There is no dot/daar is nie ‘n kol nie Gap between the line and the dot/spasie tussen die lyne en die kol e Dotted line is used/stippellyn word gebruik e A force diagram is used/kragtediagram is gebruik (3) 2.2 Fret = ma F. — fx = ma 10cos15° —0,53(3x 9,8)—10sin 15° ¥= 3av a=-— 1,51712m.s~? vp? = v;2 + 2aAxv 0 = v2 + 2(-1,51712)4v v = 3,48 m.s~} (right/regs) V Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne Marking criteria for choosing right as positive/Nasien kritiria as regs as positief gekies word «© 1 mark for/punt vir: 0,53(3(9,8) — 10sin15) ¢ 1 mark for/punt vir: 10cos15 and/en 3a e 1 mark for/punt vir: vp? = v;? + 2aAx e 1 mark for/punt vir: 0 = v2 + 2(-1,51712)4 e 1 mark for/punt vir; v = 3,48m.s~1(right/regs) (5) 2.3 Increase V/Toeneem The resultant force will increase/acceleration will increase causing the velocity to also increase. “/ Die resulterende krag sal toeneem/versnelling (2) sal toeneem, wat veroorsaak dat die snelheid ook toeneem. 24 v Fret Time(s)/Tyd(s) Marking criteria for choosing right as positive/Nasien kriteria as regs as positief gekies word e 1 mark for the line parallel to the x- axis and intersecting with the y axis in the first quadrant/7 punt vir die lyn parallel aan die x-as en sny met die y-as in die eerste kwadrant e 1 mark for the line parallel to the x axis in the fourth quadrant/ 7 punt vir die lyn parallel aan die x-as in die vierde kwadrant Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne e 1 mark for the time of change in direction of the net force/ 1 punt vir die tyd van verandering in rigting van die netto krag. | Note: Two parallel lines in the fourth and the first quadrant both (3) intersecting with the y axis (2/3)/ Let wel: Twee parallelle lyne in [13] die vierde en die eerste kwadrant wat albei met die y-as sny (2/3) Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 3 3.1 When object A exerts a force on object B, object B simultaneously exert an oppositely directed force of equal magnitude on object AY V/ Wanneer voorwerp A 'n krag op voorwerp B uitoefen, oefen voorwerp B gelyktydig 'n teenoorgestelde gerigte krag van gelyke grootte op voorwerp A uit (2 or 0) 3.2 Because the direction of resultant force/acceleration is the same as the direction of motion. “™/ Omdat die rigting van resulterende krag/versnelling dieselfde is as die rigting van beweging. (1) 3.3 Free At = mv, — mt v FreeA= Ap Ap 45 N.sright/regs) ¥ (3) 3.4 Livi = Uz MVjx + MVjy = Mvpy + MVpy 2(3) + 5(1,5)¥ = 2v7, + 5(2,5)¥ Vx = 0,5 m.s~* right /regs (4) [10] Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 4 4.1 The motion during which the only force acting on an object is the gravitational force. ““/ Die beweging waartydens die enigste krag wat op 'n voorwerp inwerk, die gravitasiekrag is (2 or 0) 4.2 vf = vj + 2gAx or v7 = v7 + 2gAyY OY = v? + 2(-9,8)(7) ¥ vj, = 11,71 m.s~! (upwards/up/)“/boontoe/op (4) 4.3.1 Positive marking from 4.2/Positiewe nasien vanaf 4.2 Exc hi the ground/ ) = Exctnat it bounce ) + Exc converted to othe energies) 1 an Baie 1 2 gM Mini) = FV (bounce) a 3 Cconvert) 55) vin” (ms—1= > (1,5)(11,71)?v +344,1v Vnit) = 24,41 m. s~1 (downwards) ¥ /(afwaarts) (4) 4.3.2 Positive marking from 4.3.1/Positiewe nasien vanaf 4.3.1 vy = V+ gtY 24,41 = 12 + (9,8)tv t =1,27sv (3) [13] Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 5 5.1.1. Avand/en BY (2) 5.4.2 Cv (1) 5.2.1 3-chioroWhexane “/3-chloroheksaan Marking criteria/Nasien kriteria e 1 mark for 3-chloro/? punt vir 3-chloro e 1 mark for hexane/? punt vir heksaan (2) 5.2.2 4-methyl”pentan-2-onev v/4-metielpentaan-2-oon OR/OF 4-methyl”-2- pentanonev v /4-metiel-2-pentanoon Marking criteria/Nasien kriteria e 1 mark for 4-methyl/1 punt vir 4-metiel e 1 mark for pentanone/7 punt vir pentaanoon e 1 mark for whole name correct/1 punt vir die hele naam korrek (3) 53 Ow é—o ACCEPT/AANVAAR ll —C—OH (2) 5.4 CnHanv¥ (1) 5.5.1. (Concentrated) Sulphuric acid ¥ (No mark for H2SOa)/ (1) (Gekonsentreerde) Swaelsuur (geen punt vir H2SO4 nie) 5.5.2 Endothermic ¥/Endotermies (1) [13] Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 6 6.1 The temperature at which the vapour pressure of the substance is equal 6.2.1 6.22 6.2.3 6.3 Copy right reserves/Kopiereg voorbehou to the atmospheric pressure. Y¥v/ Die temperatuur waarby die dampdruk van die stof gelyk is aan die atmosferiese druk. Aldehyde ¥/Aldehied London force/ induced dipole force ~/London krag/geinduseerde dipool methylpropanalv “ /metielpropanaal ACCEPT/AANVAAR 2-methylpropanal/2-metielpropanaal e Compound A has larger surface area/longer chain length than compound B. v/ Verbinding A het 'n groter opperviakte/langer kettinglengte as verbinding B Compound A has stronger intermolecular force/London force than compound B. v/ Verbinding A het sterker intermolekulére krag/Londen-krag as verbinding B More energy is required to overcome the stronger intermolecular force in compound A than compound B “/ Meer energie word benodig om die sterker intermolekulére krag in verbinding A as verbinding B te oorkom e Compound B has smaller surface area/smaller chain length than compound A. “/ Verbinding B het 'n kleiner opperviakte/kleiner kettinglengte as verbinding A. Compound B has weaker intermolecular force/London force than compound A. ¥/ Verbinding B het swakker intermolekulére krag/Londen-krag as verbinding A Less energy is required to overcome the weaker intermolecular force/London force in compound B than in compound A ¥/ Minder energie word benodig om die swakker intermolekulére krag/Londen krag in verbinding B te oorkom as in verbinding A (2 or 0) (1) (1) (3) Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne 64 (2) 1 H—C—-H _, ha Hi | | H—_c C—H | | | he M4 hi HH I Hi 65 Cv (1) [12] Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne QUESTION/VRAAG 7 7.1.1. Combustion/oxidation ¥/Verbranding/oksidasie (1) 7.1.2 Substitution “~/Substitusie (1) 7.2.1 NaOH/KOH/H20/Sodium hydroxide/potassium hydroxide/water “/ Natriumhidroksied/kaliumhidroksied/water (1) 7.2.2 HCl/ hydrogen chloride “/ waterstofchioried (1) (NO MARK FOR HYDROCHLORIC ACID/GEEN PUNT VIR SOUTSUUR NIE) rid Falsev /Fals Compound G and compound C do not have the same molecular mass/ compound G has chlorine while compound C has bromine. ~/ Verbinding G en verbinding C het nie dieselfde molekulére massa nie/ verbinding G het chloor terwyl verbinding C broom het (2) 7.4 1-butanol/ butan-1-ol¥ “/1-butaanol/butaan-1-ol (2) nn ee HHH HY H-€-C-C-C-C-(=(-(-H mmm HC =O—E—C—H + H—C—C—C—C—H Prt ii dl tot thag HHHHHHHH HoH Marking criteria/Nasien kriteria e 2 mark for 8 carbons/2 punte vir 8 koolstowwe e 1 mark for double bonds/1 punt vir dubbelbindings 1 mark for whole structure correct/1 punt vir hele struktuur korrek e 1 mark for butane/? punt vir butaan (5) (2 or 0) Copy right reserves/Kopiereg voorbehou Please turn over/Blaai om asb

Limpopo/March 2025 NSC/NSS - Marking Guidelines/Nasienriglyne 7.7 Concentrated strong base/ concentrated NaOQH/KOH ¥ /gekonsentreerde sterk basis/gekonsentreerde NaOH/KOH Heat /Hitte (2) 7.8 aa oe a ae ' rox * 1 mark for functional group/7 punt vir funksionele groep * 1 mark for whole structure correct/? punt vir hele Struktuur korrek (2) [19] TOTALITOTAAL: 100 Copy right reserves/Kopiereg voorbehou