Physical Sciences Grade 12 Paper 2 Gauteng Mock 2021 Memo

Downloaded from hlayiso.com ERRATA/ERRATUM NSC EXAMINATIONS: Preparatory Examinations 2021 NSS-EKSAMEN: Voorbereidende Eksamen 2021 ________________________________________________________________________________________________________ SUBJECT/VAK: PHYSICAL SCIENCES/FISIESE WETENSKAPPE PAPER/VRAESTEL: 2 DATE OF EXAMINATION: Monday 20 September 2021 DATUM VAN EKSAMEN: Maandag 20 September 2021 SESSION/SESSIE: 1 (09:00–12:00) ________________________________________________________________________________________________________________________ ATTENTION/AANDAG: ALL MARKERS/ALLE NASIENERS QUESTION 1/VRAAG 1 1.10 D  (2) QUESTION 10/VRAAG 10 10.1 A substance that loses electrons.  ’n Stof wat elektrone verloor. (2) 10.2 10.2.1 Cr/chromium/chroom  (1) 10.2.2 2Cℓ(aq)  Cℓ 2(g) + 2e-  Ignore phases/Ignoreer fases Marking guidelines/Nasienriglyne  Cℓ 2(g) + 2e- ← 2Cℓ(aq) ( 2 2 ) 2Cℓ(aq) ⇌ Cℓ 2(g) + 2e- ( 1 ) 2  0  0 Cℓ 2(g) + 2e ⇌ 2Cℓ (aq) - ( ) 2Cℓ (aq) ← Cℓ 2(g) + 2e ( - ) 2 2  Ignore if charge omitted on electron./Ignoreer indien lading weggelaat op elektron.  If charge (-) omitted on Cℓ /Indien lading (-) weggelaat op Cℓ: Example/Voorbeeld: 2Cℓ(aq)  Cℓ 2(g) + 2e-  Max./Maks: 1 2 (2) 10.2.3 - 0,41 V  (1)

Downloaded from hlayiso.com 10.3 10.3.1 No/Nee  - (1) 10.3.2 Zn is a stronger reducing agent  than Cu  and will be oxidised to (Zn2+).  Zn is 'n sterker reduseermiddel as Cu en sal geoksideer word na Zn2+. OR/OF - Cu is a weaker reducing agent  than Zn and therefore Zn will be oxidised  (to Zn2+). Cu is ’n swakker reduseermiddel as Zn en daarom sal Zn geoksideer word na (Zn2+). OR/OF - Cu2+ is a stronger oxidising agent  than Zn2+ and therefore Cu2+ will be reduced  (to Cu). Cu2+ is ’n sterker oksideermiddel as Zn2+ en daarom sal Cu2+ gereduseer word (na Cu). OR/OF - Zn2+ is a weaker oxidising agent  than Cu2+ and therefore Cu2+ will be reduced  (to Cu). Zn2+ is ’n sterker oksideermiddel as Cu2+ en daarom sal Cu2+ gereduseer word (na Cu). (3) [10] MRS PE OGUNBANJO Director: Examinations and Assessment Date: 21/09/2021