Physical Sciences Grade 12 NSC June 2013 Question Paper

_ Downloaded from hlayiso.com basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA SENIOR CERTIFICATE EXAMINATION FUNCTIONAL PHYSICAL SCIENCE STANDARD GRADE 2013 MARKS: 200 TIME: 3 hours FUNCTIONAL PHYSICAL SCIENCE SG 3052E 30520E This question paper has 17 pages and 3 information sheets. X@5 MIMI conyignresoned NAN 40 A ease uno

Functional Physical Science/SG Downloaded from hlayiso.com 2 DBE/2013 SCE REQUIREMENTS: An approved (non-programmable, scientific) calculator. Candidates should supply their own calculators. INSTRUCTIONS AND INFORMATION Ue Write your examination number and centre number in the spaces provided on the cover of the ANSWER BOOK. Answer ALL the questions in the ANSWER BOOK. Number ALL the answers in accordance with the question paper. Round the answers off to TWO decimal digits, where applicable. An information sheet is attached at the end of this question paper. It contains equations and constants. Some of the information may be useful in answering the question paper. Rough work may be done at the back of the ANSWER BOOK. Write neatly and legibly. Conyright recorved LT AC TLUL IL Please turn over

Downloaded from hlayiso.com Functional Physical Science/SG 3 DBE/2013 SCE SECTION A QUESTION 1: MULTIPLE-CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A-D) next to the question number (1.1—1.30) in the ANSWER BOOK. EXAMPLE: At which temperature does pure ice melt? A 4°C B 0°C Cc OK D 4°C ANSWER: B PHYSICS 1.1 When an electrical current passes through a conductor, it causes ... A amagnetic field in the conductor. B_anelectric field in the conductor. C amagnetic field around the conductor. D__anelectric field around the conductor. 1.2 ... is used to transmit electrical energy over long distances. A __ Alternating current B Direct current C Cells D Electric motors 1.3 An emf is induced in a conductor when the conductor ... A — moves through the air. B is connected to a cell. Cc moves through a magnetic field. D _ is connected to a dynamo. 1.4 Which ONE of the following is a property of electromagnetic waves only? A Moves through a vacuum B Diffraction C Interference D Polarisation Cepantesene A 0 0 Pease mover

Downloaded from hlayiso.com Functional Physical Science/SG 4 DBE/2013 SCE 1.5 The process by which electrons are removed from a metal by light, is called ... A __ thermionic emission. B__ ionisation. C radiation. D photo emission. 1.6 Cells with the same emf and identical resistors are used in the circuits below. In which ONE of the diagrams below does the ammeter show the greatest reading? A 1.7 According to Ohm's law, the ... potential difference is inversely proportional to the current strength. potential difference is directly proportional to the current strength. resistance is directly proportional to the current strength. temperature is directly proportional to the potential difference. when» 2 Copa reson LU Pose wm over

Downloaded from hlayiso.com Functional Physical Science/SG 5 DBE/2013 SCE 1.8 In a transformer ... A electrical energy is created. B_ thermo-ionic emission takes place. C_ potential difference is changed. D_ alternating current is changed to direct current. 1.9 Which ONE of the following is NOT a method of removing electrons from an atom? A_ Emission-line spectrum B_ Thermo-ionic emission C_ Photo-electric effect D Friction 1.10 An electron (e) engages an energy level in an atom, as shown in the diagram below. What will happen to the electron when it gains energy? The electron is excited and moves to P. The electron is excited and moves to Q. The electron is pushed out of the atom. Light is emitted. uaNDY 1.11 How is electromagnetic radiation generated? Acceleration of charges in an electric field Diffraction of light through different media Refraction of light through different media Movement of charges at a constant speed woke 2 Conroe NON A A Pesotum vr

Downloaded from hlayiso.com Functional Physical Science/SG 6 DBE/2013 SCE ce When white light is shone through a 60° prism, the light is dispersed into seven colours, namely red, orange, yellow, green, blue, indigo and violet. These colours are arranged according to increasing ... A charge. B_- wave length. C_ frequency. D_ speed. Which statement is applicable to a step-down transformer? A_ The number of turns on the primary coil is more than the number of turns on the secondary coil. B The number of turns on the secondary coil is more than the number of turns on the primary coil. C The current in the secondary coil is lower than the current in the primary coil. D The current in the secondary coil is the same as the current in the primary coil. Which appliance works on the motor effect? A_ Microphone B_ Electric bell C Galvanometer D_ Transformer Peter places a soft iron core in a current-bearing coil. This causes the magnetic field surrounding the coil to ... A _ stay constant. B_ change its direction. C_ increase. D_ decrease. (15 x 2) (30) CHEMISTRY 1.16 Rutherford found that when gold foil is bombarded with alpha particles, most of the alpha particles move through the foil, but a small amount is reflected. He suggested that ... A the atom consists of a small, dense, positive nucleus surrounded by electrons. electrons are big particles in comparison to protons. electrons move in orbitals around the nucleus. the nucleus of an atom consists of protons and neutrons. 00W Copyright reserved EEUU AEA A EA deneininial

Downloaded from hlayiso.com Functional Physical Science/SG 7 DBE/2013 SCE 1.17 When an electron is raised from a lower energy level to a higher energy level 1.19 1.20 1.21 1.22 in an atom ... A energy is liberated by the atom. B the electron gains energy. C_ the atomic nucleus loses energy. D_ the atom becomes a negative ion. A substance in which the intermolecular forces between molecules are very small, will ... A evaporate easily and have a low boiling point. B_ evaporate easily and have a high boiling point. C_ evaporate with difficulty and have a low boiling point. D_ evaporate with difficulty and have a high boiling point. The bond between the H atom and the Cf atom in the HC£ molecule can best be described as ... A __ resulting from Van der Waals forces. Ba hydrogen bond. C_ anionic bond. Da polar covalent bond. While energy is needed to break bonds, it is usually also released when bonds are formed. When an electric current is sent through acidified water (H20), it is an example of a reaction where bonds ... A play no part. B_ remain unchanged. Care broken. Dare formed. Which ONE of the following describes a chemical reaction at equilibrium under all circumstances? A The reaction takes place in an open container. B_ The rate of the forward reaction is equal to the rate of the reverse reaction. C_ The reaction mixture contains equal concentrations of reactants and products. D_ The products form at a faster rate than the reactants. The following reaction has reached a state of equilibrium: Haq) + laig) = ZHligy,, AH < 0 The concentration of HI can be increased by ... reducing the temperature. increasing the temperature. increasing the pressure on the system. reducing the pressure on the system. leon: 2 Coprantaseed 0 Pose wmover

Downloaded from hlayiso.com Functional Physical Science/SG 8 DBE/2013 SCE 1.23 In which ONE of the following is the oxidation number of nitrogen (N) zero? A NOs B NH3 Cc NO, D No 1.24 Study the equation of the following reaction: 2FeCts + H2S > 2FeCh, + S + 2HCL The oxidation number of the oxidising agent changes from ... A -2to0. B +3 to +2. D +3to0. C -2to +2. 1.25 Which ONE of the following processes takes place at the anode of an electrochemical cell while it is delivering a current? A_ Neutralisation B Reduction only C Oxidation only D_ Both reduction and oxidation 1.26 The only products that form when a certain substance burns in oxygen are water and carbon dioxide. Which ONE of the following is most likely the substance? A 2 B CH, C CHs3 D CChy 1.27 Lindie lowers a small piece of burning potassium (K) into a gas cylinder filled with oxygen (O2). What does she observe? A Ared flame B_ An intense yellow flame C_ Anintense white flame D Agreen flame 1.28 Each successive alkane in the homologous series differs from the previous alkane by ... protons. 0NOWDY 3 © OO 2 Cop send NA 0 Pose um over

Downloaded from hlayiso.com Functional Physical Science/SG 9 DBE/2013 SCE 1.29 A halogen derivative was formed by using a reactant which was a liquid at room temperature. Which ONE of the following is the derivative? A H B H H c H H H D H H H HH 1.30 O ll H—C—H The compound above is known as ... ethanoic acid. propanone. methanal. methanol. (15 x 2) (30) 0QNU> TOTAL SECTION A: 60 Cornea 0 Pease um or

Downloaded from hlayiso.com Functional Physical Science/SG 10 DBE/2013 SCE SECTION B: PHYSICS QUESTION 2: MAGNETIC EFFECT Electric motors are used frequently in everyday life. The sketch below is a simple representation of an electric motor. B Cc A D YG A X / | 2.1 In which direction will coil ABCD rotate when switch S is closed? Answer the question by writing: Conductor AB will rotate ... (2) 2.2 Explain your answer to QUESTION 2.1. (3) 2.3 Name the following parts: 2.3.1 xX (1) 2.3.2 Y (1) 2.4 What is the function of Y in the electric motor? (2) 2.5 Name TWO changes which will cause the coil to rotate faster. (4) [13] Conyteseved NAN Pease um vr

QUESTION 3: MAGNETIC INDUCTION Downloaded from hlayiso.com Functional Physical Science/SG 11 SCE DBE/2013 The sketch below is a simple representation of an alternating-current dynamo. 77 Name the following parts: 3.1.1 x 3.1.2 Y 3.2 Q or from Q to P) 3.3 3.4 Copyright reserved N B Cc S (1) (1) What will be the direction of the conventional current through the galvanometer at the moment conductor AB moves into the page? (From P to How will you change the apparatus into a direct-current dynamo? Name TWO methods to increase the reading on the galvanometer. GAUTENG (2) (2) (4) [10] Please turn over

Downloaded from hlayiso.com Functional Physical Science/SG 12 SCE QUESTION 4: TRANSFORMERS DBE/2013 The sketch below represents a transformer with three times as many turns on the primary coil as on the secondary coil. “2 Sle | primér/ sekondér/ primary secondary 4.1 Is this a step-up transformer or a step-down transformer? 4.2 The current in the primary is 1 A and the voltage across the secondary is 4 V. Assume that there is no energy loss. What would be the expected magnitude of the following: 4.2.1 The current in the secondary coil 4.2.2 The power in the secondary coil 4.3 Will the transformer function if the primary coil is connected to a 12 V motor battery? Explain your answer. QUESTION 5 5.1 Draw a neat diagram to show how a galvanometer G and a resistor R must be connected to form an ammeter. | Does this resistor have a large or a small value? 5.3 What is this resistor called? 5.4 Which electrical quantity is measured by an ammeter? 7 In which SI unit is this quantity measured? Conynesened NAA Please turn over (2) (2) (2) (3) 19] (2) (1) (1) (1) (1) [6]

Downloaded from hlayiso.com Functional Physical Science/SG 13 DBE/2013 SCE QUESTION 6: OHM'S LAW In the circuit below the battery consists of five cells connected in series. The emf of each cell is 1,5 V. The internal resistance of the battery is negligible. L is a bulb with a resistance of 0,9 Q. (n> | 14s A ° AIH] HIE (Vv) Ww) (At) 7Q 3a L 6.1 What is the reading on voltmeter V and ammeter A if switch S is open? (4) 6.2 The switch is now closed. Calculate the total resistance in the circuit. (5) 6.3 Calculate the current through the lamp. (4) 6.4 Calculate the reading on ammeter A1. (5) 6.5 What will happen to the brightness of lamp L if the 39 resistor is removed from the circuit? (1) 6.6 Explain your answer to QUESTION 6.5. (3) [22] QUESTION 7: WAVES Karin causes waves in a ripple tank. The waves have a speed of 0,8 m.s* and a wavelength of 20 mm. 7.1 Calculate the frequency of these waves. (4) 7.3 What is the period of these waves? (2) [6] Cont eso A A Pease um or

Downloaded from hlayiso.com Functional Physical Science/SG 14 DBE/2013 SCE QUESTION 8: LIGHT, COLOUR AND SPECTRA Saskia shines white light onto one side of a glass prism. White light 8.1 Which colour experiences the most refraction? (2) 8.2 Which colour from the spectrum has the highest frequency? a CHEMISTRY QUESTION 9: ATOM STRUCTURE Complete the following statements by filling in the missing words. 9.1 An element is composed of small fundamental particles called ... (2) 9.2 These particles have a ... charged nucleus. (2) 9.3 The nucleus is surrounded by a cloud of charged particles called ... (2) 9.4 In their non-combined state these fundamental particles of elements are normally ... charged. (2) 9.5 If one of these particles gains or loses a negatively charged particle, a(n) ... is formed. (2) [10] Conynrosene NAN A Pease tum ove

Downloaded from hlayiso.com Functional Physical Science/SG QUESTION 10 15 SCE DBE/2013 10.1 Match the descriptions (10.1.1-10.1.4) with the substances in the list below. Choose only ONE substance for each description. [ NH3;_C;__ MgCty; Fo; | 10.1.1 A substance consisting of polar molecules with polar covalent bonds (2) 10.1.2 A substance consisting of non-polar molecules with polar covalent bonds (2) 10.1.3 This substance dissolves to form positive and negative ions (2) 10.1.4 In the solid phase, the particles of this substance are held together by covalent bonds (2) 10.2 Use a Lewis diagram, for example H3H, and show how the water molecule bonds. (4) [12] QUESTION 11: INTERMOLECULAR FORCES Use the table below to answer the questions that follow. MOLECULE MASS MELTING BOILING POINT POINT Ch 71 -103 -35 Bro 160 -7,2 59 lp 254 114 184 11.1 Which substance will form a solid at room temperature? (2) 11.2 Which substance has the strongest intermolecular forces? (2) 11.3 What type of intermolecular forces do we find between the molecules of the substances in the table above? (2) 11.4 Explain why Iz has a higher melting and boiling point than Bro. (4) [10] Copyright reserved GAUTENG Please turn over

Downloaded from hlayiso.com Functional Physical Science/SG 16 DBE/2013 SCE QUESTION 12: ENERGY AND CHEMICAL BONDING The oxidation of sulphur(IV)oxide to sulphur(Vi)oxide is an essential step in the production of sulphuric acid. 12.1 12.2 12.3 12.4 12.5 12.6 2SOniq) + Org) = 280g) (AH = -95 kJ.mol") During the forward reaction a net amount of energy is released. Explain the origin of this excess energy. Which of the gases must be removed continuously to ensure a high yield of products? If the equilibrium in the reaction shifts so that the concentration of the reactants increases, what will happen to the pressure? (Assume the volume and the temperature remain constant.) Will the reverse reaction be exothermic or endothermic? What will be the influence of an increase in temperature on the following: 12.5.1 Yield of the product ea? Rates of the forward and the reverse reactions at equilibrium What will the influence of a decrease in pressure be on the production of SO3(q)? Copa reson A 0 0 Pease wm over (4) (2) (2) (2) (2) (2) (2) [16]

Downloaded from hlayiso.com Functional Physical Science/SG Us DBE/2013 SCE QUESTION 13: ELECTROCHEMISTRY Study the diagram below and answer the questions that follow. 51 mal platinum rods concentrated copper chloride solution 13.1 Is this an electrochemical cell? 13.2 Write down the formulae of the TWO ions formed when copper chloride dissolves in water. 13.3 What are the platinum rods called? 13.4 What is observed at the following: 13.4.1 The positive rod 2C2" > Clo + 2° 13.4.2 The negative rod Cu’? + 2e° — Cu 13.5 Write down a balanced equation for the complete redox reaction. 13.6 Does the positive rod act as the cathode or as the anode? QUESTION 14 Write down the structural formula for each of the following: 14.1 Ethane 14.2 CH3COOH 14.3 Ethanol TOTAL SECTION B: GRAND TOTAL: Comrise AA AAA (2) (4) (2) (2) (2) (3) (2) [17] (2) (2) (1) [5] 140 200

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Downloaded from hlayiso.com Functional Physical Science/SG DBE/2013 SCE PHYSICS INFORMATION SHEET/ FISIKA-INLIGTINGSBLAD EQUATIONS/VERGELYKINGS WAVES/GOLWE ELECTRICITY/ELEKTRISITEIT Vv = Af R = 4 + lo + 13 f = 1 a . a + i : i T R q % fr Volp = Vels = P .. : N, Vv, N, PHYSICS CONSTANTS/ FISIKA-KONSTANTES Miscellaneous constants (Approximate values) Diverse konstantes (Benaderde waardes) NAME/NAAM SYMBOL/SIMBOOL VALUE/WAARDE Speed of light Spoed van lig c 3x 10° ms" Charge on electron Lading op elektron e -1,6x 10°C Co Tce CEU AAT UTA A

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Downloaded from hlayiso.com Functional Physical Science/SG DBE/2013 SCE 26 | 16 | 68 | 98 | 98 | ve | cw | ee | 9 | ve | o | 9] £9] 6s | ssf us| wl cr l oe |v] o¢ | oz] ez] orl sila 06 | 09} ov] oz] or} so conoid zefreloelezlez|ezloz|szlyz 1 ; alee (orien lend eatea le ee eee pe <q | 3ONSH3II0 ALIALLVOSNOULOS TA Cte [We poezpoupsr ier iorisil wr ler|zr{ ri} orl ool eo} col gol sol vo] col zo) ro “WISUBASLISLIMUVOSNOMI STA a“) oN PA | wy 83 EY) 4a | wo | wy nd qn n eq a ov S01 zol) tor 004 C3 86] ts % E) 4] £6] 2s] 16 04 68 La GA wy 43 oH fa a pS ng us Wd PN dd 5) ey W 4 CS [3 a9) E) so] ce) tg] FE) tg 0] 6s] ss] us| — ey 4 — $9) rt) = teh — = ug W Od ‘a ad IL 6H ny dd 4 so ay M eB r) eg |3s08 — — Ei) Ex) +8) £8) 2a) it) oe 61 cy ul su sul 7 774 9s] Lo __9] -—F seh a Bz Zu city Sut ETT Got ‘901 tol son 6 96 e6 16 8 i] sso -—I4 2 «le = ~ ws . 2 ~ + ~ . . = * = z s — 8X 8/8 18/8 on 8/8 as Sid us £18 ug] po g]e By £18 pa g1¥ uu g[d muy gl: on 318 ow 3/8 qn £18 oz g[8 A s|/B 4s B13 qu F =s ys] Sz ix zs] 64 is] es Os} et Cueas orl et Ly} ZZ or] 22 Spl 22. vy} Gt PUES FURS Ae] vk Oy} 2h bE] OF se] vo. Pty — we 8 a SL 9eL OL ¥'s9 sto 6s 6s Cy $s 2s 4s ey sy ov = 8 B/S 4a 2/8 os 2/8 sv 8/8 e0 8/8 ep 8/2 uz B]¥ m0 Sz IN 8/¥ 00 GE o4 S|Z uw GIB uo G2 a gls uw gl2 os 31g eo 2/2 wk = sez seve __vejoz _ecles _zcloy _islos ocles czas ~—azios—aziss ozs sels vals els ae rc zfs ozo >= oF os 7 1 ee a oir & = Saves alg sae a 2l8 is 218 we —— 3 Bw 8/3 eN & — aloe au sz gu} v2. sul os wil stt eu ‘SSEU ORWIOIE ON]RSY/ESSEUNUOO|E OMNI ry zs zijeo 4 02 a Ty vt a tor . : x ule A . . A 2 BNEIE 42/2 OFS NZIB O51Z as Seog 28 ne ; ot] o'r ej se sl oe use go | ‘ABs0u0 wogres}uoy 13, /e10s2ue-sses{u0) e135 —Pt 3, H to] (Wd) srupes auiy/(uxd) srupeawooiy st vio e 2 ke) T o x . $ 3H 8 Sus z AuqeSouonoeranonmnebouonyer3 pl b'2 Ve (2) sequnu qwary 112) reredwoory x4 i Aoyneiners @318VL/2 138VL SVL D1001Nad / T38VL 3NaIGOINSd Copyright reserved

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Downloaded from hlayiso.com Functional Physical Science/SG DBE/2013 SCE STANDARD REDUCTION POTENTIALS OF A NUMBER OF HALF-REACTIONS STANDAARD-REDUKSIEPOTENSIALE VAN VERSKEIE HALF-REAKSIES Volts/ Half-reaction/Half-reaksie E’ volt lite = Li -3,05 Ki+e = K -2,93 Cs*+e = Cs -2,92 Ba*+2e + Ba -2,90 Srt+2e = Sr -2,89 Ca*+2e = Ca -2,87 Nat*+e = Na -2,71 Mg” +2e = Mg -2,37 A +3e = Ad -1,66 Mn**+2e = Mn -1,18 2H,0 +2e = H,+20OH™ -0,83 Zn*+2e = Zn -0,76 © Crt+3e = Cr -0,74 ie) Fe**+2e = Fe -0,44 4 Sé Cd*+2e = Cd -0,40 ® Se Co**+2e = Co -0,28 sf a8 Ne +2e7 = Ni ~0,25 £8 Ls Sn*+2e = Sn -0,14 $6 2 Pb*+2e° = Pb -0,13 2% XQ Fe*+3e = Fe -0,04 oo os 2H*+2e = H, 0,00 3k £2 S+2H'+2e = HS +0,14 23 s 2 Sn*+2e° = Sn* +0,15 Ds 5 8 Cu*+e = Cur +0,16 oF =e SO? +4H*+2e = SO,+2H,O +0,17 os { Cue +2e = Cu +034 | £8 2H,0+0,+4e° = 40H +0,40 SO,+4H*+4e = S+2H,0 +0,45 I+2e = 2r +0,54 oO. ortrtrts=SCtrsSs CC +0,68 ay Fe*+e = Fe* +0,77 Hg**+2e = Hg +0,79 NO,+2H*+e = NO,(g)+H,O +0,80 Ag'+e = Ag +0,80 NO,+4H*+3e = NO(g)+2H,0 +0,96 Br,(0)+2e = 2Br +1,09 P'+2e = Pt +1,20 MnO, +4H*+2e” # Mn? +2H,O +1,21 0,(g)+4H*+4e = 2H,O +1,23 Cr,02 + 14H*+6e + 2Cr*+7H,O +1,33 Ci,(g)+2e = 2Cr +1,36 Au*+3e = Au +1,42 MnO; +8H*+5e = Mn*+4H,O +1,51 H,O, + 2H*+2e = 2H,O +1,77 F,(g)+2e° * 2F° +2,87 E°ceil = E°cathode — E°anode | Ese! = E°katode — E°anode Copyright reserved CHAT UO AOU