Physical Sciences Grade 12 North West March Test 2025 QP

education Department: Education North West Provincial Government REPUBLIC OF SOUTH AFRICA PROVINCIAL ASSESSMENT ( GRADE 12 : PHYSICAL SCIENCES E CONTROL TEST : MARCH 2025 : MARKS: 100 TIME: 2 hours This paper consists of 16 pages including DATASHEET and the PERIODIC TABLE Copyright reserved Please turn over

NW/March 2025 Grade 12 INSTRUCTIONS AND INFORMATION 1, 10. Write your name and other information in the appropriate spaces on the ANSWER BOOK. This question paper consists of SEVEN questions. Answer ALL questions in the ANSWER BOOK. Number the answers correctly according to the numbering system used in this question paper. Leave ONE line between two subquestions, e.g. between QUESTION 2.1 and QUESTION 2.2 You may use a non-programmable pocket calculator. Show ALL formulae and substitutions in ALL calculations. Round off your FINAL numerical answers to a minimum of TWO decimal places where applicable. Give brief motivationa, discussions,etc. where required. You are advised to use the attached DATA SHEETS. Write neatly and legibly. Copyright reserved Please turn over

NW/March 2025 Grade 12 QUESTION 1 Various options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A—D) next to the question numbers (1.1 to 1.16) in the ANSWER BOOK, e.g. 1. 11 D. 1.1. The gravitational force that the earth and Planet Y exerts on each other is F when there is a distance d between their centres. What would be the magnitude of the force experienced between the two when the distance between their cenires is 3d? d A OF. B 2 Ry 3 CS a 9 D 3F. (2) 1.2 The change in momentum of an object can be equated to its... A change in velocity. B product of mass and velocity. Cc change in kinetic energy. iw) product of net force and change in time. (2) Copyright reserved Please turn over

NW/March 2025 Grade 12 1.3. Ahot air balloon is descending at a velocity of 7,5 ms’ when a boy throws a plastic disc upwards at a velocity of 4 m:s*'. What is the initial velocity of plastic disc? 7,5ms" A 11,5 ms"? downwards. B 3,5 ms downwards. [e; 4 ms‘ downwards. D 7,5 ms downwards. (2) 1.4 The condensed structural formula of a compound is shown below. (0) Il Cae i Mal ee H Which one of the following is the correct IUPAC name for this compound? A 2,2,1,1-tetramethylpropanoic acid B 2,2,3- trimethylbutanoic acid S 1,1,2,2-tetramethylpropanoic acid D 3,2,2-trimethylbutanoic acid (2) Copyright reserved Please turn over

NW/March 2025 Grade 12 1.5. Which one of the following functional groups has the strongest intermol A B Cc D lecular forces. Hydroxyl and Formyl| Formyl and Carbonyl Hydroxyl and Carboxyl Carboxyl and Carbonyl (2) 1.6 The following cracking reaction takes place in high temperatures and pressures. Pentane —> X+Y Which of the following compounds are likely to be the products of the above reaction? A B Cc D Copyright reserved Ethene + propane Ethane + propane Propene + ethene Ethanol + propanol (2) [12] Please turn over

NW/March 2025 Grade 12 QUESTION 2 Two toy cars of mass 4kg and 6kg respectively are connected by a light inextensible rope inclined at 25° to the horizontal as shown. The 6kg toy car is pulled by a 50N applied force inclined at 30° to the horizontal. The kinetic frictional force experienced by the 4kg and 6 kg toy cars are 10 N and 15 N respectively. SON ant ae 30° 2.1. State Newton's second law of motion in words. 2.2 Draw a labelled free-body diagram showing all forces acting on the 6kg toy car. 2.3 Calculate the acceleration experienced by the toy cars. 2.4 Calculate the tension on the rope. (2) (5) (6) (2) [15] Copyright reserved Please turn over

NW/March 2025 Grade 12 QUESTION 3 A girl was standing on top of a hotel building playing with a ball of mass 1,2 kg. She projected the ball upwards and failed to catch it on its way down. The ball fell to the ground. The position versus time graph below shows the motion of the ball from the moment it was projected until it reached the ground. Displacement-v-time graph A 44 aN = | E > ” 6 32 Time (s) ® , = o 55) & a. a2) Qa -90 +- v 3.1 Define the term Free fall. (2) 3.2 3.2.1. What is the height of the building from which the ball was (1) thrown? 3.2.2 What is the acceleration of the ball at maximum height? (1) 3.3 Using equations of motion only, Calculate the: 3.3.1 Initial velocity of the ball. (3) 3.3.2 Velocity with which the ball hits the ground. (3) Copyright reserved Please turn over

NW/March 2025 Grade 12 3.3.3 While the ball is in contact with the ground, it experiences a Net force of 130 N and then bounces off the ground with a velocity of 16,5 m.s". Calculate the time the ball was in contact with the ground. (4) 3.4. Draw a velocity versus time graph for the motion of the ball from the moment it was thrown until it strikes the ground. On the graph show the following: e Velocity at which the ball was thrown and e Velocity at which the ball hits the ground. (3) [17] Copyright reserved Please turn over

NW/March 2025 Grade 12 QUESTION 4 A group of learners were investigating the rate of change in momentum using two trolleys, Trolley A with mass 2 kg and Trolley B with a mass of 5 kg were placed on a flat frictionless surface. Trolley A moves easterly towards a stationery trolley B, the two trolleys collide and move together after the collision. The table below shows the initial velocities of trolley A and the collision time for two collision trails that took place between the trolleys. Trolley A Initial velocity (m-s*) Contact time(s) Trail 1 1,5 Oe Trail 2 zZ 0.25 4.1 State the term represented by the words in italics in the above statement. (1) 4.2 Calculate the magnitude of the velocity of the two trolleys after collision in trail 1. (4) 4.3 Calculate the net force experienced by trolley B in trial 2. (5) 44 Will the magnitude of the forces that the trolleys exert on each other in trial 1 be EQUAL to the magnitude of the forces in Trail 2? Choose from YES or NO. Give a reason for the answer. (2) [12] Copyright reserved Please turn over

NW/March 2025 Grade 12 QUESTION 5 Consider organic compounds represented by letters A to F in the table below. H CH; H CH,CH; A d l l B_ | Butanoic acid — a —H H ba, H bascte H H OH Cc | | Wo D_ | CHsCH(CHs)CH2CHCICHs H—C—C—C—C—H | | | H H H H O H H E CHsCH2CH2COH F | I | | H—C—0—C—C—C—H | | | H H H Use the information in the table to answer the questions that follow. 5.1. Write down a letter that represents the following. 5.1.1. AHaloalkane. (1) 5.1.2 Acompound that has a Carboxyl group as a functional group. (1) 5.2 Write down the : 5.2.1. |UPAC name of compound A. (3) 5.2.2 General formula of compound A. (1) 5.2.3 IUPAC name of compound E. (2) 5.2.4 Structural formula of compound D . (3) 5.3. Compound C and E are isomers. 5.3.1 Define the term structural isomer. (2) 5.3.2 Identify the type of Isomerism between the two compounds? (1) Copyright reserved Please turn over

NW/March 2025 Grade 12 5.4 Compound F is an ester. Write down the... 5.4.1. IUPAC name of this ester. (2) §.4.2 — structural formula of the alcohol that was used to produce this ester. (2) 5.4.3. inorganic compound that is produced in the process of producing the ester. (1) [19] Copyright reserved Please turn over

QUESTION 6 Grade 12 NW/March 2025 Learners use the following compounds to investigate the factors that affect the vapour pressure of organic compounds. COMPOUND VAPOUR PRESSURE (kPa at 25°C) A 2-methly propane 150 B Butane 83 Cc Propan-1-ol 54 D Ethanoic acid 26 6.1 Define the term Vapour pressure. 6.2. Which compound A or B has a higher boiling point? Explain your answer. (2) (4) 6.3. Explain the difference in vapour pressures of compound C and D by referring to the TYPE OF INTERMOLECULAR FORCES present in each compound. Copyright reserved (4) [10] Please turn over

NW/March 2025 Grade 12 QUESTION 7 In the flow diagram below 2-bromobutane undergoes different reactions as illustrated. Answer the questions that follow. Compound A Reaction 1 | Concentrated H2SO4 2-bromobutane Reaction 2 Reaction 3 An Alcohol SEE An Ester 7.1. Consider reaction 1, write down the: 7.1.1 Type of reaction that takes place. (1) 7.1.2 _lUPAC name of compound A which is a major product. (2) 7.2 Consider reaction 2, write down the: 7.2.1 Type of reaction that takes place. (1) 7.2.2 Structural formula of the alcohol. (2) 7.2.3. Reaction conditions (2) 7.3. Consider reaction 3 7.3.1. Write down the homologous series to which the OTHER organic reactant in this reaction belongs. (1) 7.3.2 The ester contains 6,6% of Hydrogen(H), 40% of Carbon(C) and 53,33% of Oxygen (O). The molar mass of the ester is 150gmol™: Use a calculation to determine its molecular formula. (6) [15] TOTAL: 100 Copyright reserved Please turn over

NW/March 2025 Grade 12 DATA FOR PHYSICAL SCIENCES GRADE 12 TABLE 1: PHYSICAL CONSTANTS PAPER 1 (PHYSICS) NAME SYMBOL VALUE Acceleration due to gravity g 9,8 m-s* Universal gravitational constant G 6,67 x 10"! N-m?-kg Speed of light in a vacuum — c 3,0 x 10° m-s* Planck's constant h 6,63 x 104 J-s Coulomb's constant k 9,0 x 10°N-m?-C? Charge on electron e -1,6x 1o"'S Electron mass Me 9,11 x 10°" kg Mass of the Earth M 5,98 x 10“ kg Radius of the Earth Re 6,38 x 10°m TABLE 2: FORMULAE MOTION Ve =Vj + adt Ax =v,At+4adt? OR Ay=vAt+ tat? V, =v) +2aAx OR v,? =v +2aAy Vi +V Vi. +V Ax =| —+ |At OR Ay =| + |At ( 2 Y ( 2 ) FORCE Fret =ma p=mv fo =p,N f, =HyN FieAt =Ap wemg Ap=mv, _ mv, Gm,m Gm,m GM GM Copyright reserved Please turn over

NW/March 2025 Grade 12 CHEMISTRY waa! mee -M Na n m Vv c=— or/of =— n=— Vv aan Vp Copyright reserved Please turn over

NW/March 2025 Grade 12 8&2 ANA 47 | ON | PW | Wy | sg] 3D | ¥9 | WO] Wy] ng] dN] A | ed | UL col | zob | LOL | OOL 66 86 26 96 S6 +6 £6 4) L6 06 SLL | €Zb | 691 | LOL | SOL | €9b | 6SL | ZGL | ZSL | OSL vel | bob | OL ny | qA | wi] 43 | on | Aa | at | pS | ng | ws | wg] pn | ta | 29 — bl ol 69 89 29 99 SQ v9 £9 42] L9 09 6S 8S ov ey 2 44 2 68 88 28 602 202 02 L0z Z6L S6L Z6L O61 98L | P8L b8L 6LL 6eL ZeL eer uy | IV Bod S| !a 3)dd 3) aL s/6H jny | jd 4} |sO |9Y | M /PL [JH a) eT | Pa esos 98 ss vs 38 (43) bs os 62 2 dL 92 Gl bl eZ (4) ds 9s SS beL vA 8zL (cA D 6LL SbL Aa 801 9OL cor LOL 96 26 6 68 88 98 2X 1 SeLSiaszius Z| ul S)pos|G6yv spay R| ny RoLZioW Sian |4Z 2) A zl 4S slau s vs €¢ es LS os 6 8r Lv ov Sv vy ev 44 by ov 6¢ ge Ze vs 08 62 Sl el 02 s9 s‘e9 6S 6S 9S SS es bs 8y SY ov 6¢ 4M | AG &) OS BSW 8] OD Z| PD 5) UZ 3) 99D SIN &) 9D &] Od SUNG) IDS =| 2 3) 9S 3) 2D 2] WS 9¢ s¢ ve ee (43 be oe 6z 82 1K4 92 Sz ve Lx4 (44 x4 4 61 4 s‘c¢ ze ve 82 2@ Za LA IV 3D $ s8idS8lis glaws SSEW DIWOJe aAI}E[e1 ayeUIXoddy 6 =| eN i nn . nN gL PA} QL Sl 12) eb L ZL LL 02 6L QL vL ra bE s‘e9 6 z PN |S SOS NE DHaS loquks —> ND % f— AyaneBouonoa/y ea airs OL 6 8 re 9 S 62 v £ v t b Nn Ks Jaquinu s1woyy Aa ‘4 = (IA) (IIA) (IA), (A) CAD (it) (11) (1) 8b 24b Ob GL bh €b Ch LL OF 6 8B ZL 9 cS 6 Ut € Z L ATEVL DIGOMAd -€ ATEVL Copyright reserved