2024 XMS P1 PRELIM MS

This document consists of 16 printed pages. XINMIN SECONDARY SCHOOL SEKOLAH MENENGAH XINMIN Preliminary Examination 2024 CANDIDATE NAME CLASS INDEX NUMBER CHEMISTRY Secondary 4 Express Setter: Ms Tiffany Lim Vetter: Mrs Annie Ng 6092/01 28 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Question Paper and Answer Sheet in the spaces provided. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C, D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 2. The use of an approved scientific calculator is expected, where appropriate. For Examiner’s Use Total 40 Parent’s Signature

2 The Periodic Table of Elements Group 1 2 13 14 15 16 17 18 Key 1 H hydrogen 1 2 He helium 4 3 Li lithium 7 4 Be beryllium 9 proton (atomic) number atomic symbol name relative atomic mass 5 B boron 11 6 C carbon 12 7 N nitrogen 14 8 O oxygen 16 9 F fluorine 19 10 Ne neon 20 11 Na sodium 23 12 Mg magnesium 24 3 4 5 6 7 8 9 10 11 12 13 Al aluminium 27 14 Si silicon 28 15 P phosphorus 31 16 S sulfur 32 17 Cl chlorine 35.5 18 Ar argon 40 19 K potassium 39 20 Ca calcium 40 21 Sc scandium 45 22 Ti titanium 48 23 V vanadium 51 24 Cr chromium 52 25 Mn manganese 55 26 Fe iron 56 27 Co cobalt 59 28 Ni nickel 59 29 Cu copper 64 30 Zn zinc 65 31 Ga gallium 70 32 Ge germanium 73 33 As arsenic 75 34 Se selenium 79 35 Br bromine 80 36 Kr krypton 84 37 Rb rubidium 85 38 Sr strontium 88 39 Y yttrium 89 40 Zr zirconium 91 41 Nb niobium 93 42 Mo molybdenum 96 43 Tc technetium – 44 Ru ruthenium 101 45 Rh rhodium 103 46 Pd palladium 106 47 Ag silver 108 48 Cd cadmium 112 49 In indium 115 50 Sn tin 119 51 Sb antimony 122 52 Te tellurium 128 53 I iodine 127 54 Xe xenon 131 55 Cs caesium 133 56 Ba barium 137 57–71 lanthanoids 72 Hf hafnium 178 73 Ta tantalum 181 74 W tungsten 184 75 Re rhenium 186 76 Os osmium 190 77 Ir iridium 192 78 Pt platinum 195 79 Au gold 197 80 Hg mercury 201 81 Tl thallium 204 82 Pb lead 207 83 Bi bismuth 209 84 Po polonium – 85 At astatine – 86 Rn radon – 87 Fr francium – 88 Ra radium – 89–103 actinoids 104 Rf rutherfordium – 105 Db dubnium – 106 Sg seaborgium – 107 Bh bohrium – 108 Hs hassium – 109 Mt meitnerium – 110 Ds darmstadtium – 111 Rg roentgenium – 112 Cn copernicium – 113 Nh nihonium – 114 Fl flerovium – 115 Mc moscovium – 116 Lv livermorium – 117 Ts tennessine – 118 Og oganesson – lanthanoids 57 La lanthanum 139 58 Ce cerium 140 59 Pr praseodymium 141 60 Nd neodymium 144 61 Pm promethium – 62 Sm samarium 150 63 Eu europium 152 64 Gd gadolinium 157 65 Tb terbium 159 66 Dy dysprosium 163 67 Ho holmium 165 68 Er erbium 167 69 Tm thulium 169 70 Yb ytterbium 173 71 Lu lutetium 175 actinoids 89 Ac actinium – 90 Th thorium 232 91 Pa protactinium 231 92 U uranium 238 93 Np neptunium – 94 Pu plutonium – 95 Am americium – 96 Cm curium – 97 Bk berkelium – 98 Cf californium – 99 Es einsteinium – 100 Fm fermium – 101 Md mendelevium – 102 No nobelium – 103 Lr lawrencium – The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.). The Avogadro constant, L = 6.02 x 1023 mol-1

3 XMSS/Chemistry/6092/01/ Preliminary Examination 2024 1 A student investigated the diffusion of ammonia gas, NH3, and hydrogen chloride gas, HCl. Two sets of apparatus were set up as shown below at room temperature and pressure. The damp red litmus paper in apparatus 1 changed colour after 30 seconds. How long does it take for the damp blue litmus paper to change colour in apparatus 2? A about 21 seconds B about 30 seconds C about 64 seconds D The blue litmus paper would not change colour. 2 Substance X, melts at 10 C and boils at 50 C. It can be purified by distillation as shown in the diagram. At which point will the particles of X be most regularly arranged? freezing mixture -5 oC heat D A B C

4 XMSS/Chemistry/6092/01/ Preliminary Examination 2024 3 A student wishes to follow the rate of a chemical reaction using the apparatus shown below. Which of the following reactions allows a student to do so? A AgNO3 + KI B CuSO4 + NaOH C HCl + Mg D HCl + NaOH 4 Three separation methods are listed below. 1 obtaining water from sodium chloride solution 2 obtaining solid iodine from a mixture of solid iodine and nickel 3 obtaining solid sodium chloride from aqueous sodium chloride Which techniques would be involved in these separations? 1 2 3 A distillation sublimation evaporation B distillation sublimation filtration C filtration crystallisation evaporation D sublimation crystallisation filtration 5 Three particles and their nuclide notations are shown. particle 1 2 3 nuclide notation X+ 19 40 Y 19 39 Z2- 16 34 Which of the following statements is correct about the particles? A Particle 1 has more electrons than particle 3. B Particle 1 and 2 have the same number of neutrons. C Particle 1 and 3 have the same number of electrons. D Particle 2 has fewer neutrons than particle 3.

5 XMSS/Chemistry/6092/01/ Preliminary Examination 2024 6 The bar chart shows the period of elements from lithium to neon. Which property of the elements is shown on the chart? A number of electron shells B number of electrons used in bonding C proton number D relative atomic mass 7 Three elements W, X, Y, and Z have consecutive, increasing proton (atomic) numbers. Element Y exists as a colourless, monatomic gas at room temperature. Which will be the chemical formula of a compound formed between W and chlorine? A WCl B W2Cl C WCl2 D W2Cl3 8 The mixtures shown in the table are warmed. In which mixture does a gas form? Key: ✓ = gas forms,  = no gas forms NaOH(aq) and NH4Cl(s) NaOH(aq) and Mg(s) H2SO4(aq) and NaCl(s) A ✓ ✓  B ✓  ✓ C ✓   D   ✓ Property Li Be B C N O F Ne element property element

6 XMSS/Chemistry/6092/01/ Preliminary Examination 2024 9 A paper chromatography experiment was carried out to determine the inks present in a mixture, and the results shown below were obtained. Which statement about the results is incorrect? A Ink 4 is more soluble than ink 3 in the solvent used. B Inks 1 and 2 contained more than one colour pigment. C The ink mixture contained inks 1, 3 and 4. D The Rf value of ink 3 in the solvent used is more than 0.5. 10 An aqueous solution containing two salts is found. A series of tests is carried out to identify the ions present. The results are shown. no description observations 1 Add dilute nitric acid followed by aqueous barium nitrate. No effervescence and white precipitate is observed. 2a