# Physical Sciences Grade 10 P2 Gauteng November 2020 Memo > Grade 10 Physical Sciences Paper 2 memorandum from the Gauteng November 2020 (English), 5 pages. Read online or download the free PDF. - Page: https://www.hlayiso.com/library/gr10-phy-p2-english-2020-exemplars-possible-answers/516ffb54-83f0-4689-b880-703464bd9681 - Updated: 2026-09-27 - Subject: Physical Sciences - Grade: Grade 10 - Language: English - Document type: Memorandum - Year: 2020 - Exam period: Gauteng November - Paper: 2 - Curriculum: CAPS - Pages: 5 Breadcrumbs: [Home](https://www.hlayiso.com/) › [Library](https://www.hlayiso.com/library) › [Grade 10](https://www.hlayiso.com/library/grade-10) › [Physical Sciences](https://www.hlayiso.com/library/grade-10/physical-sciences) › [Physical Sciences Grade 10 P2 Gauteng November 2020 Memo](https://www.hlayiso.com/library/gr10-phy-p2-english-2020-exemplars-possible-answers/516ffb54-83f0-4689-b880-703464bd9681) ## About this document Physical Sciences · Grade 10 · Gauteng November · 2020 · English. Memorandum, 5 pages. Read online or download the PDF. Read it free online on the page above; download the PDF from there. ## Matching paper and memo - [Gr10 Phy P2 (English) 2020 Exemplars Question Paper](https://www.hlayiso.com/library/gr10-phy-p2-english-2020-exemplars-question-paper/b73f7863-1dbd-4b9b-93ec-9ca726a859a8) — QP · 2020 · Eng ## Document text Text extracted from the PDF. Layout, diagrams and tables may not survive extraction. ### Page 1 Downloaded from hlayiso.com GAUTENG DEPARTMENT OF EDUCATION PROVINCIAL EXAMINATION NOVEMBER 2020 GRADE 10 PHYSICAL SCIENCES (CHEMISTRY) PAPER 2 MARKING GUIDELINES 5 pages ### Page 2 Downloaded from hlayiso.com PHYSICAL SCIENCES (CHEMISTRY) MARKING GUIDELINES PAPER 2 GR 10 QUESTION 1: MULTIPLE CHOICE QUESTIONS 1.1 A (2) 1.2 A (2) 1.3 B (2) 1.4 C (2) 1.5 D (2) [10] QUESTION 2 2.1 2.1.1 liquid  (1) 2.1.2 Is the temperature of a liquid at which its vapour pressure equals the external (atmospheric) pressure. (2) 2.1.3 32  ° C (marks may be given for 30 to 35° C) (2) 2.1.4 (a) increase  (1) (b) remains the same  (1) 2.1.5 During this interval the particles have the same temperature. Temperature is a measure of the average kinetic energy of the particles. The energy from the heat is used for potential energy to have a phase change.  (3) [10] QUESTION 3 3.1 3.1.1 19  3.1.2 20  3.1.3 19  3.1.4 24  3.1.5 10  (5) 3.2 Atoms of the same element having the same number of protons, but different number of neutrons. (2) 3.3 (7)(6)  (93)(7) Ar(Li) = = 6,93 100  (3) [10] 2 ### Page 3 Downloaded from hlayiso.com PHYSICAL SCIENCES (CHEMISTRY) MARKING GUIDELINES PAPER 2 GR 10 QUESTION 4 4.1 The transfer of electrons to form cations and ions that attract each other to form a formula-unit. (2) 4.2 MgCℓ2 (2) 4.3 4.3.1 3 energy levels Level 1 and 2 complete  7 valence electrons in level 4 (3) 4.3.2 3s² 3p5 (1) 4.4 1s² 2s² 2p6 3s²  (2) 4.5   2 x Cℓ– Mg2+ + 2Cℓ– → MgCℓ2 (4) [14] 3 ### Page 4 Downloaded from hlayiso.com PHYSICAL SCIENCES (CHEMISTRY) MARKING GUIDELINES PAPER 2 GR 10 QUESTION 5 5.1 The simplest whole number ratio of atoms in a compound.  (2) 5.2   Pb : N :O n = 0,302 mol Pb  1 :2 :6  or Pb(NO3)2  n = 0,604 mol N  n = 1,816 mol O (6) [8] QUESTION 6 6.1 A: 2SO2(g) + 3O2 → 2SO3(g)  B: 2KCℓO3(s) → 2KCℓ(s) + 3O2(g)  C: 2Aℓ + Fe2O3 → Al2O3(s) + 2Fe(s)  D: 2C2H6(g) + 7O2(g) → 4CO2 + 6H2O(g)  (4) 6.2 The Law of constant composition states that different samples of a pure compound always contain the same elements in the same mass proportion. (2) 4 ### Page 5 Downloaded from hlayiso.com PHYSICAL SCIENCES (CHEMISTRY) MARKING GUIDELINES PAPER 2 GR 10 6.3 2NaBr(aq) + Cℓ2(g) → 2NaCℓ(aq) + Br2(ℓ)  m = 206 g NaBr  m = 71 g Cℓ2 206 + 71 = 277 g reactants  m = 117 g NaCℓ  m = 160 g Br2 117 + 160 = 277 g products Mass of reactants equal mass of products; mass is conserved. (5) [11] QUESTION 7 7.1 aqueous solution or solution in which water is the solvent  (1) 7.2   n = 0,316 mol Na2CO3 (3) 7.3 1 mol Na2CO3 reacts with 2 mol HCℓ 0,316 mol Na2CO3 reacts with 0,632 mol HCℓ (2) 7.4 To test for CO2  (1) [7] TOTAL: 70 5 ## Related documents - [Gr10 Phy P1 (English) 2020 Exemplars Possible Answers](https://www.hlayiso.com/library/gr10-phy-p1-english-2020-exemplars-possible-answers/ee187216-99cf-43c1-b1c9-359fb436efad) — Physical Sciences · Memo · 2020 · Eng - [Gr10 Phy P1 (English) 2020 Exemplars Question Paper](https://www.hlayiso.com/library/gr10-phy-p1-english-2020-exemplars-question-paper/4ff40b51-a3f5-4dad-a82a-9434d88dbc1b) — Physical Sciences · QP · 2020 · Eng - [PHYSC P2 GRD10 QP NOV2020 English](https://www.hlayiso.com/library/physc-p2-grd10-qp-nov2020-english/a0593b95-369a-4c97-a537-ab1e9db94a9b) — Physical Sciences · QP · 2020 · Eng - [PHSC SCIENCES P1 GR10 MEMO NOV2020 Afr+Engl](https://www.hlayiso.com/library/phsc-sciences-p1-gr10-memo-nov2020-afr-engl/5649a7a5-414c-44ec-a379-b6d3d90353f2) — Physical Sciences · Memo · 2020 · Eng - [Gr 10 Physical Sciences P1 (English) November 2022 Possible Answers](https://www.hlayiso.com/library/gr-10-physical-sciences-p1-english-november-2022-possible-answers/910ac2af-b1bb-42b6-9f5a-973f4e4bdcea) — Physical Sciences · Memo · 2022 · Eng - [PHSC SCIENCES P1 GR10 QP NOV2020 English](https://www.hlayiso.com/library/phsc-sciences-p1-gr10-qp-nov2020-english/a845ea04-587e-4eb2-b3cb-3272479f54bd) — Physical Sciences · QP · 2020 · Eng ## More from Grade 10 Physical Sciences - [Grade 10 Physical Sciences P2 November 2026 Mock 2](https://www.hlayiso.com/library/grade-10-physical-sciences-2026-november-mock-exam-2-question-paper-paper-2/5bd7a947-8dcc-4f45-a4e1-7d600246d8f7) — QP · 2026 · Eng - [Gr 10 Phys Sci ATP 2023-24](https://www.hlayiso.com/library/gr-10-phys-sci-atp-2023-24/f162614c-9eea-46bf-b61a-5a5dc6360c7b) — ATP - [EC AW Physical Sciences Grade 10 June 2025 QP and Memo](https://www.hlayiso.com/library/ec-aw-physical-sciences-grade-10-june-2025-qp-and-memo/55c5e457-737d-42d8-a3e9-d141082f89d3) — QP + Memo · 2025 - [2025 EC - Physical Sciences Grade 10 March QP](https://www.hlayiso.com/library/2025-ec-physical-sciences-grade-10-march-qp/bd09640b-cf56-4333-b958-01ad4331ee25) — QP · 2025 - [FS Physical Sciences Grade10 June 2025 QP and Memo](https://www.hlayiso.com/library/fs-physical-sciences-grade10-june-2025-qp-and-memo/4bbbc06c-f9d3-4d47-9bd5-7421512cd012) — QP + Memo · 2025 - [KZN Physical Sciences Grade 10 November 2025 P1 and Memo](https://www.hlayiso.com/library/kzn-physical-sciences-grade-10-november-2025-p1-and-memo/c5bea2ed-3318-4f7d-b1f6-2ac68a9d3399) — QP + Memo · 2025 ## Collection - [Grade 10 past papers](https://www.hlayiso.com/grade-10/past-papers) --- Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. 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