NW 12 TECH SCI P2 MG AFR ENG JUNE 2025

PROVINCIAL ASSESSMENT PROVINSIALE ASSESSERING GRADE/GRAAD 12 TECHNICAL SCIENCES P2/TEGNIESE WETENSKAPPE V2 JUNE/JUNIE 2025 MARKING GUIDELINES/NASIENRIGLYNE MARKS/PUNTE: 75 These marking guidelines consists of 7 pages. Hierdie nasienriglyne bestaan uit 7 bladsye Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/Tegniese Wtenskappe/P2/V2 2 NW/June/Junie 2025 Grade/Graad 12 – Marking guidelines/Nasienriglyne QUESTION/VRAAG 1: 1.1 C ✓✓ (2) 1.2 A ✓✓ (2) 1.3 C ✓✓ (2) 1.4 B ✓✓ (2) 1.5 A ✓✓ (2) [10] QUESTION/VRAAG 2 2.1 2.1.1 Organic compounds containing only carbon atoms and hydrogen ✓✓ Organiese verbindings wat slegs koolstofatome en waterstofatome bevat. (2) 2.1.2 An atom or a group of atoms that determine the chemistry of a molecule ✓✓ OR An atom or group of atoms that determine(s) the physical and chemical properties of a group of organic compounds 'n Atoom of 'n groep atome wat die chemie van 'n molekuul bepaal OF 'n Atoom of 'n groep atome wat die fisiese en chemiese eienskappe van 'n groep organiese verbindings bepaal (2) 2.2 2.2.1 A ✓ and B ✓ (2) 2.2.2 F✓ (1) 2.2.3 E✓ (1) 2.2.4 C ✓ and D ✓ (2) 2.3 2.3.1 Butan ✓-2-ol ✓ (2) 2.3.2 Propanone/Propanoon ✓✓ (2) 2.3.3 Ethyl ✓ propanoate ✓ Etiel propanoaat (2) 2.4 2.4.1 CnH2O ✓ (1) Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/Tegniese Wtenskappe/P2/V2 3 NW/June/Junie 2025 Grade/Graad 12 – Marking guidelines/Nasienriglyne 2.4.2 CnH2nO2 ✓ (1) 2.5 2.5.1 Marking criteria • ✓ Correct functional group • ✓ Whole structure correct • If a bond or hydrogen is missing ½ Nasien kriteria • ✓ Korrekte funksionele groep • ✓ Hele struktuur korrek • Indien ‘n verbinding of waterstof kort ½ (2) 2.5.2 Marking criteria • ✓ Correct functional group • ✓ Whole structure correct • If a bond or hydrogen is missing ½ Nasien kriteria • ✓ Korrekte funksionele groep • ✓ Hele struktuur korrek • Indien ‘n verbinding of (2) waterstof kort ½ 2.6 A large molecule composed of smaller monomer units covalently bonded to each other in a repeatly pattern. ✓✓ 'n Groot molekuul wat uit kleiner monomeer-eenhede bestaan wat kovalent aan mekaar in 'n herhalende patroon gebind is (2) 2.7 Polythene/Politeen ✓ (1) [25] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/Tegniese Wtenskappe/P2/V2 4 NW/June/Junie 2025 Grade/Graad 12 – Marking guidelines/Nasienriglyne QUESTION/VRAAG 3 3.1 The pressure exerted by a vapour at equilibrium with it’s liquid in a closed system. ✓✓ Die druk uitgeoefen deur 'n damp in ewewig met sy vloeistof in 'n geslote sisteem. Hoe sterker die intermolekulêre kragte, hoe laer die dampdruk. (2) 3.2 Primary alcohol ✓ The (-OH) hydroxyl group is attached to a primary carbon. ✓ OR The hydroxyl group (-OH) is bonded to only one other carbon atom. Primêre alkohol Die (-OH) hidroksied groep is op die primêre koolstof OF Die hidrolsiel groep (-OH) is verbind met slegs een ander koolstofatoom. (2) 3.3 3.3.1 Dispersion/London Forces ✓ Dispersie/London Kragte (1) 3.3.2 Hydrogen bond/Waterstofverbindings ✓ (1) 3.4 Compound A / Propane ✓ Verbinding A / Propaan (1) 3.5 Ethanoic acid ✓ Etanoësuur (1) 3.6 Consists of TWO sites for hydrogen bonding ✓ and has stronger intermolecular force than compound A and B. ✓ OR The stronger the intermolecular forces, the higher the boiling point. The stronger the intermolecular forces, the lower the vapour pressure. Bestaan uit TWEE waterstofbindings plekke en het sterk intermolekulêre kragte tussen verbinding A en B OF Hoe sterker die intermolekulêre kragte, hoe hoër die kookpunt. Hoe sterker die intermolekulêre kragte, hoe laer die dampdruk. (2) 3.7 Molecules that have the same molecular formular but different types of chains. ✓✓ Molekule met dieselfde molekulêre formule, maar verskillende (2) struktuurformules Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/Tegniese Wtenskappe/P2/V2 5 NW/June/Junie 2025 Grade/Graad 12 – Marking guidelines/Nasienriglyne 3.8 Marking criteria • ✓ Correct functional group • ✓ Whole structure correct • If a bond or hydrogen is missing ½ Nasien kriteria • ✓ Korrekte funksionele groep • ✓ Hele struktuur korrek • Indien ‘n verbinding of waterstof kort ½ (2) [14] QUESTION/VRAAG 4 4.1 4.1.1 Hydrohalogenation/Hidrohalogenering ✓ (1) 4.1.2 Hydration/Hidrasie ✓ (1) 4.2 Substitution reaction/Substutisie reaksie ✓ (1) 4.3 4.3.1 Butane/Butaan ✓ (1) 4.3.2 Bromobutane ✓/ 1-bromobutane Bromobutaan / 1-bromobutaan (1) 4.3.3 Butan-2-ol ✓ (1) 4.4 4.4.1 Pt/ Pd/ Ni as a catalyst ✓ Pt/Pd/Ni as ‘n katalisator (1) 4.4.2 No water must be present ✓ Geen water moet teenwoordig wees nie (1) 4.5 Marking criteria • ✓ Correct functional group • ✓ Whole structure correct • If a bond or hydrogen is missing ½ Nasien kriteria • ✓ Korrekte funksionele groep • ✓ Hele struktuur korrek • Indien ‘n verbinding of waterstof kort ½ (2) Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/Tegniese Wtenskappe/P2/V2 6 NW/June/Junie 2025 Grade/Graad 12 – Marking guidelines/Nasienriglyne 4.6 4.6.1 Marking criteria/Nasien kriteria • 1 mark for the reactants/1 punt vir reaktante • 1 mark for functional group of alkene/1 punt vir funksionele groep van alkeen • 1 mark for Butane/1 punt vir Butaan • NOTE: Penalise 1 mark if condensed structural/molecular formula for butene is given. • NOTA: Penaliseer 1 punt indien gekondenseerde strukturele/molekulêre formule vir buteen gegee is. (3) 4.7 4.7.1 Combustion / Oxidation ✓ Verbringing/ Oksidasie (1) 4.7.2 2C3H6 + 9O2 ✓ 6CO2 + 6H2O + energy ✓ Balancing ✓ (3) 4.8 • Combustion of fuel source in applications where high heat is needed ✓ • In engines of cars, bikes and automobiles • In generators to generator electricity • Powering industrial equipment • Blowtorches • Gas stoves (Any one) • Verbranding van brandstof in toerusting waar hoë hitte benodig word • In motorenjins, motorfietse en motors • In generators om elektrisiteit te genereer • Aandryf van industriële toerusting • “Blowtorches” • Gasstowe (Enige een) (1) [18] Copyright reserved/Kopiereg voorbehou Please turn over/Blaai om asseblief

Technical Sciences/P2 7 NW/JUNE 2025 Grade 12 – Marking guideline QUESTION/VRAAG 5 5.1 5.1.1 A material which has electrical conductivity between that of a conductor and an insulator. ✓ ✓ 'n Materiaal met 'n elektriese geleidingsvermoë tussen dié van 'n geleier en 'n isolator (2) 5.1.2 Pure semiconductor. ✓ ✓ Suiwer halfgeleier (2) 5.2 The positive terminal of the battery must be connected to the p-type material ✓ and the negative terminal of the battery must be connected to the n-type material. ✓ Die positiewe terminaal van die battery moet gekoppel wees met die p- tipe materiaal en die negatiewe terminaal van die battery moet gekoppel wees met die n-tipe materiaal. (2) 5.3 Silicon (Si) ✓ Germanium (Ge) ✓ (2) [8] TOTAL/TOTAAL: 75 Copyright reserved