Compassvale-Secondary-Combined-Chemistry-Prelim-2022

BP -144 Effi]F+ COMPASSVALE SECON DARY SCHOOL PRELIMINARY EXAMINATION 2022 scrENcE (cHEMlsTRY, BTOLOGY) 5078/01 Paper 1 tVultiple Choice Secondary Four Express / Five Norma! (Academic) Name: lndex No: Class: Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or corection fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider conect and record your choice in soft pencil on the separale Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each conect 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 Data Sheet is printed on page 19. A copy of the Periodic Table is printed on page 20. The use of an approved scientific calculator is expected, where appropriate. This paper consists of 20 printed pages including this page. PartnerlnLeaming 1M Setters: Mdm C Lim, Duration: I h Date: 31 Aug2O22 Marks: I 40

BP- 145 2 2 1 3 A B c D A B c D Which apparatus is most suitable for collecting 25.0 cm3 of fluorine at room temperature? burette gas syringe measuring cylinder pipette The melting and boiling points of two substances X and Y are shown Substances X and Y are miscible liquids. substance melting point / 'C boiling point / 'C X 5.5 80 -95 1'10 Which method is most suitable to separate substances X and Y? crystallisation filtration fractional distillation simple distillation Which statements about the Kinetic Particle Theory are conect? 1 ln gaseous state, particles are far apart and moving in random directions' 2 Particles in solid state have lower kinetic energy than particles in liquid state' 3 During boiling, particles gain energy and break free from their fixed positions' A l and2 B 1and3 C 2and3 D 1,2 and 3 PartnerlnLeaming 145

BP- 146 3 4 A solid substance is heated to melt and cooled as shown in the diagram. temperature i "C M time / min What are the physical states of the substance at M and N? M N A B c D liquid liquid + solid liquid + solid solid liquid + solid liquid solid liquid + solid 5 A solution of lead(ll) nitrate is tested with different reagents. Which row gives the correct observation? 6 An element X forms an ion X2- Which group of the Periodic Table is this element found in? Group I Group ll Group Vl Group Vll PartnerlnLeaming 146 N A B c D test observation A B c D aqueous ammonia added aqueous sodium hydroxide added aqueous sodium hydroxide added dilute nitric acid added white precipitate formed, soluble in excess white precipitate formed, soluble in excess effervescence observed effervescence observed I

BP-147 4 7 The chemical formula of the mmpound formed by P and Q is PQz. Both P and Q are non-metals. What is the correct electronic configuration of P and Q? P A B c D 2.2 2.4 2.8.1 2.8.6 2.7 2.6 2.6 2.1 I 8 Potassium chlorate has the formula KC/O:. What is the chemical formula of copper(ll) chlorate? CuC/O: CuzC/Os Cu3(C/O3) 2 Cu(C/O:)z What is the concentration, in mol/dm3, of this solution? 0.0025 mol/dm3 0.1575 mol/dm3 2.5 mol/dm3 157.5 mol/dm3 The reaction is exothermic. which row shows the direction of heat ffow and the change in temperature for this reaction? temperature change direction of heat Jlow A B c D fall fall rise rise from surroundings to sunoundings from surroundings to surroundings PartnerlnLeaming 147 A B c D A B c D A solution of nitric acid is made by dissolving 31.5 g of HNO3 in 200 cm3 of water' A student adds an aqueous solution of sodium hydroxide to a solution of dilute hydrochloric acid-10

BP-148 5 11 Coppe(ll) oxide is added to excess dilute nitric acid. The equation for the reaction is shown. CuO(s) + 2HNO3(aq) ) Cu(NO:)z(aq) + HrO(/) Which change in the conditions will increase the speed of reaction? decrease the concentration of nitric acid decrease the volume of nitric acid increase the particle size of coppe(ll) oxide increase the temperature Which reaction represents reduction? 2Ct- ) Clz +2* H* +OH- ) HzO Na* + C/- ) NaC/ Fe3* +e- ) Fe2* Substance Z is an insoluble solid. Excess substance Z is added into a beaker of dilute hydrochloric acid. The pH of the reaction mixture is measured and shown. pH mass of substance Z added / g What is substance Z? calcium hydroxide magnesium carbonate potassium oxide silver chloride PartnerlnLeaming 148 A B c D 12 Part of some chemical reactions are shown. 13 A B c D A B c D 7

BP- 149 6 14 Some information about oxides of T and U are given. What type of oxides are oxides of T and U? 15 Which salt requires pipette and burette in its preparation? ammonium chloride barium sulfate lead(ll) chloride zinc nitrate 16 PartnerlnLearning 149 A B c D Which row about bromine is correct? reacts with acid to form salt and water reacts with base to form salt and water oxide of T X oxide of U X X T U A B c o acidic amphoteric basic neutral amphoteric acidic neutral basic state at room temperature colour displacement reactions A B c D liquid liquid solid solid red-brown red-brown brown brown displaces chlorine from chlorides displaces iodine from iodides displaces chlorine ftom chlorides displaces iodine from iodides I

BP- 150 7 17 ldentical pieces of iron are placed in four different test-tubes. ln which tesltube will the iron rust? A c D water water water water tron rron tron iron grease paint plastic copper 18 Two statements were made about acid rain. Statement 1 : The burning of fossil fuels containing sulfur is a cause of 'acid rain'. Statement 2: Acid rain is formed from sulfur dioxide which is produced when sulfur compounds burn. Which of the following is true? Both statements are conect and statement 2 explains statement 1. Both statements are correct but statement 2 does not explain statement 1 . Statement 1 is conect but statement 2 is incorrect. Statement 2 is conect but statement 1 is incorrect. 19 bitumen diesel lubricating oil naphtha PartnerlnLearning '150 B A B c D A B c D Which petroleum ftaction is used as a material for road surfaces?

BP- 151 8 20 The diagram shows part ofthe structure of an addition polymer. Which monomer is used to make this polymea F I H-C_H I F PartnerlnLeaming 15'l F F FF F F tttlll -c-c-c-c-c-c-tlllllF F FF F F F I F-C-F I F HHll C=CllHH FFtt C=CtlFF A B c D

BP- 1 54 HTH++ COMPASSVALE SECONDARY SCHOOL PRELIMINARY EXAMINATION 2022 scrENcE (cHEMTSTRY) 5076/03, 5078/03 Paper 3 Theory Secondary Four Express / Five Normal (Academic) Duration: thlSmin Date: 26 Aug2022 Marks: / 65 lndex No: Class: READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work you hand in. You may use an HB pencil for any diagrams, graphs, tables or rough working. Write in dark blue or black pen. Do not use staples, paper clips, glue or conection fluid. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or if you do nol use appropriate units. Section A Answer all questions. Write your answers in the spaces provided on the question paper. Section B Answer any two questions- Write your answers in the spaces provided on the question paper. A copy of the Data Sheet is printed on page 14. A copy of the Periodic Table is printed on page 15. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. PartnerlnLearning 154 Name: This paper consists of 15 printed pages including this page. Setter: Mdm C Lim

BP- 155 t51 t11 t1l t1l t11 1 Section A Answer all the questions in the spaces provided. Write on the line above the anow a suitable description of the change. The first has been completed for you as an examPle. 2 Use the Periodic Table to help you a