However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader 4 (a) (i) Any two from: chromium is harder; has higher density; has higher melting point / boiling point; stronger; ora; [2] note: comparison must be made. MARK SCHEME. In this second experiment, the product is aqueous potassium hydrogensulfate, KHSO4. Download free PDFs and access mark schemes and examiner reports. Answer the following questions using these substances. Remove the bung from the conical flask and add 1. IB20 06_0620_23/3RP UCLES Each question paper and mark scheme will also comply with these marking principles. CHEMISTRY 0620/41 Paper 4 Theory (Extended) October/November 2021 MARK SCHEME Maximum Mark: 80 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Biology (8461) Business (8132) Chemistry (8462) Computer Science & IT (8520) Economics (8136) READ THESE INSTRUCTIONS FIRST. However, credit is given for valid answers which go CHEMISTRY 0620/61 Paper 6 Alternative to Practical May/June 2016 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. The Periodic Table is printed in the question paper. Each question paper and mark scheme will also comply with these marking principles. • The total mark for this paper is 40. IB16 03_0620_62/5RP UCLES 2016. Designed by the teachers at SAVE MY EXAMS for the CIE IGCSE Chemistry 0620 / 0971 syllabus. Past papers of Cambridge IGCSE Chemistry 0620 are available from 2002 up to the latest session. MARK SCHEME for the October/November 2011 question paper for the guidance of teachers 0620 CHEMISTRY 0620/33 Paper 3 (Extended Theory), maximum raw mark 80 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Sulfur dioxide gas can be made by adding dilute hydrochloric acid to solid sodium sulfite and heating the mixture. 1 The apparatus in the diagram was used to show that when a candle is burned both water and carbon dioxide are formed. However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader Manganese(IV) oxide is added to 20 cm3 of aqueous hydrogen peroxide. • The Periodic Table is printed in the question paper. This document consists of 17 printed pages and 3 blank pages. This syllabus is regulated for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate. The ionic half-equations for the reaction are shown. Any rough working should be done on this question paper. Marks awarded are always whole marks (not half marks, or other fractions). It does not indicate the Marks awarded are always whole marks (not half marks, or other fractions). [1] rate of forward reaction equals rate of back reaction concentrations do not change / macroscopic properties remain constant (with time) accept: amounts. t. Mar 24, 2023 ยท PapaCambridge provides Cambridge IGCSE Chemistry 0620 latest past papers and resources that includes syllabus, specimens, question papers, marking schemes, resource booklet, FAQ’s, Teacher’s resources and a lot more. It does not indicate the GENERIC MARKING PRINCIPLE 1: Marks must be awarded in line with: the specific content of the mark scheme or the generic level descriptors for the question. Place the mixture obtained in the apparatus shown in Fig. Location Entry Codes. IB24 03_0620_42/6RP UCLES 2024. Do not use an erasable pen or correction fluid. [1] [1] [1] [1] [1] strength / prevent sagging / allows greater separation of pylons / core made of steel because it is strong. sodium hydrogencarbonate. IB21 06_0620_22/2RP UCLES 2021. Calculate the number of moles of oxygen gas produced. Describe the observations in the following tests. Any blank pages are indicated. IGCSE. The gases produced when the candle burns are passed through the apparatus using a suction pump. Empty the conical flask and rinse it with distilled water. Write your name, Centre number and candidate number on the answer sheet in the Paper 6 Alternative to Practical. X. This document has 20 pages. It shows the basis on which Examiners were instructed to award marks. This document consists of 10 printed pages. You may use an HB pencil for any diagrams or graphs. bond breaking = 243 . same reaction 1 Vr = Vp. IB22 06_0620_23/RP UCLES 2022. -Source Files (ICT) . to suction. IB22 06_0620_62/3RP UCLES 2022. Paper 6 Alternative to Practical. -Most Recent Papers. Published. UCLES 2020. Physical: (good) conductor (of electricity) or soft or lubricant or high melting point/high boiling point or grey black or black solid or slippery or greasy (to touch) or brittle/breaks when subjected to stress or insoluble in water [1] Chemical: reducing agent or reduces metal oxides/named metal oxide or reacts with/burns in air/oxygen or INFORMATION. Write in soft pencil. -Mark Schemes. Do not use staples, paper clips, glue or correction fluid. A sample of nitrogen dioxide and dinitrogen tetroxide at equilibrium was placed in a closed gas syringe. This document has 16 pages. GENERIC MARKING PRINCIPLE 3: Marks must be awarded positively: marks are awarded for correct/valid answers, as defined in the mark scheme. DO NOT WRITE IN ANY BARCODES. Let the sugar solution cool and then add yeast. Do not open this booklet until you are told to do so. However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader . Additional Materials: Multiple Choice Answer Sheet. Registered schools can access more materials from 2018 onwards. May/June 2022. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking CHEMISTRY 0620/41 Paper 4 Theory (Extended) October/November 2022 1 hour 15 minutes Y ou must answer on the question paper. 1 The diagram shows the apparatus used to separate a mixture of water, boiling point 100 °C, and ethanol, boiling point 78 °C. 1. A mark will not be deducted for a wrong answer. Zinc sulfate is soluble in water. Write your Centre number, candidate number and name on all the work you hand in. The gas made can be dried by passing it through concentrated sulfuric acid. IB20 11_0620_43/4RP R. IB19 06_0620_22/3RP UCLES 2019. 1 (a) The table below gives information about particles. • Each correct answer will score one mark. Write your answer to each question in the space provided. the standard of response required by a candidate as exemplified by the standardisation scripts. [2] (b) Label the arrows on the condenser. the 2. This document consists of 9 printed pages and 3 blank pages. GENERIC MARKING PRINCIPLE 3: arded positively:marks are awarded for correct/valid answers, as defined i. 0620/62. heat. IB21 06_0620_21/2RP UCLES 2021. Salts that are soluble in water can be made by the reaction between insoluble carbonates and dilute acids. A student decomposed a sample of sodium hydrogencarbonate using the apparatus shown. FREE Chemistry revision notes on Kinetic Theory. the INSTRUCTIONS. The total volume of oxygen gas produced is 72 cm3 at r. 0620/01. delivery tube. Some Group VII elements react with aqueous solutions containing halide ions. Cambridge International is publishing the mark schemes for the October/November 2022 series for most Cambridge IGCSETM, Cambridge International A and AS Level components and some Cambridge O Level components. the Registration for Cambridge/Edexcel 2024/2025 is now Open in Kuwait at Dynamic Institute. OCTOBER/NOVEMBER SESSION 2002. The number of marks for each question or part question is shown in brackets [ ]. IB22 11_0620_61/RP UCLES 2022. 2H2O2(aq) → 2H2O(l) + O2(g) Calculate the concentration of the aqueous hydrogen peroxide in g / dm3 using the following steps. Use your answer to (c)(i) and the equation to deduce the volume of H2SO4 required. The products are solid sodium carbonate, water and carbon dioxide. When aqueous bromine is added to aqueous potassium iodide a reaction occurs. the Find past papers, examiner reports and specimen papers for Cambridge IGCSE Chemistry (0620) from 2022 to 2023. the IB16 06_0620_61/3RP UCLES 2016. The total mark for this paper is 80. GENERIC MARKING PRINCIPLE 1: Marks must be awarded in line with: the specific content of the mark scheme or the generic level descriptors for the question. However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader CHEMISTRY 0620/63 Paper 6 Alternative to Practical October/November 2022 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. doc. Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended) TIME. IB22 03_0620_22/RP UCLES 2022. 1 The names of nine substances are shown. 45 minutes. 0620/61. 2 2. Do not use staples, paper clips, highlighters, glue or correction fluid. INSTRUCTIONS. However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader Each question paper and mark scheme will also comply with these marking principles. the specific skills defined in the mark scheme or in the generic level descriptors for the question. water and ethanol mixture heat. Sulfur dioxide gas is toxic, denser than air and soluble in water. Add hot water to the sugar cane and stir to dissolve the sugar in the sugar cane. KING PRINCIPLE 2:Marks awarded are always whole marks (not half marks, or. the standard of response required by a candidate as exemplified by the standardisation INFORMATION. It does not indicate the details of the discussions that Paper 4 (Extended Theory), maximum raw mark 80. Describe the colour change of the solution. boiling point / °C. This document consists of 14 printed pages and 2 blank pages. IB20 11_0620_21/5RP UCLES 2020. aluminium oxide ammonia carbon monoxide anhydrous cobalt(II) chloride hydrated copper(II) sulfate iron(III) oxide nitrogen dioxide silver steel. IB21 03_0620_22/3RP UCLES 2021. Past question papers, mark schemes, examiner reports, grade thresholds, syllabuses and other resources for Cambridge IGCSE Chemistry 0620 preparation. Nitrogen dioxide is brown and dinitrogen tetroxide is colourless. Record the time taken for 100 cm3 of gas to be collected in the measuring cylinder. Prepare for your O Level Biology exam with past papers from Cambridge. The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate. Write in dark blue or black pen. Maximum Mark: 40. After 20 minutes a white ring of ammonium chloride is seen at position Y. It does not indicate the Each question paper and mark scheme will also comply with these marking principles. (1) bond forming = 652 or 326 × 2 (1) energy change = –409 kJ (1) negative sign essential. OR exothermic AND overall energy change has a negative sign. p. Describe how you would make a pure sample of zinc sulfate crystals. 9-1 System have the same examination questions and format but just only with different grade boundaries so they are the same as regular. alcohol. 2. IB15 03_0620_42/7RP UCLES 2016. [1] (c) Nitrogen dioxide, NO 2, exists in equilibrium with dinitrogen tetroxide, N2O. condenser. IB20 03_0620_62/2RP UCLES 2020. You are provided with solid zinc carbonate, ZnCO3, and dilute sulfuric acid, H2SO4. (a) Complete the boxes to name the apparatus. INSTRUCTIONS Answer all questions. Sulfur trioxide combines with concentrated sulfuric acid to form oleum, H2S2O7. Iron ore contains iron(III) oxide, Fe2O 3. 3. 9-1 System. It does not indicate the CHEMISTRY 0620/41 Paper 4 Theory (Extended) May/June 2022 1 hour 15 minutes Y ou must answer on the question paper. 4(c)(ii) exothermic AND energy released when bonds form is greater than energy absorbed to break bonds. Write your name, centre number and candidate number in the boxes at the top of the page. IB18 06_0620_42/3RP UCLES 2018. This document has 12 pages. IB22 06_0620_61/3RP UCLES 2022. (ii) Any two from: sodium is more reactive; chromium has more than one oxidation state, sodium has one; chromium forms coloured compounds, sodium compounds are white; sodium reacts with cold Each question paper and mark scheme will also comply with these marking principles. • Any rough working should be done on this question paper. Use a black or dark blue pen. the Fig. No additional materials are needed. cotton wool soaked in concentrated ammonia solution. IB23 06_0620_21/2RP UCLES 2023. Microsoft Word - 0620_s08_ms_31. This document consists of 11 printed pages and 1 blank page. IB23 11_0620_23/7RP UCLES 2023. Blank pages are indicated. 2NO2(g) N2O4(g) brown colourless. Calcium chloride is soluble in water and calcium carbonate is insoluble in water. As part of CIE’s continual commitment to maintaining best practice in assessment, CIE has begun to use different variants of some question papers for our most popular assessments with extremely large and widespread candidature, The question papers are closely related and the 0620/1. U-tube. English As A Second Language – 9280; GCSE. The iron pyrites is heated strongly in air. Cambridge International will not enter into discussions about these mark schemes. CHEMISTRY 0620/42 Paper 4 Theory (Extended) May/June 2016 MARK SCHEME Maximum Mark: 80 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. GENERIC MARKING PRINCIPLE 2: Marks awarded are always whole marks (not half marks, or other fractions). Answer all questions. Leave the apparatus until fermentation is complete. (i) (a) In stage 1, iron pyrites, FeS2, can be used instead of molten sulfur. the mark scheme. Sodium hydrogencarbonate decomposes when heated. Cambridge International is publishing the mark schemes for the October/November 2019 series for most Cambridge IGCSETM, Cambridge International A and AS Level components and some Cambridge O Level components. This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Sulfur dioxide reacts with oxygen to form sulfur trioxide. 1 The table gives the boiling points of four alcohols. This Website Provides: -Past Papers. Experiment 2. Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST. 4. Oleum reacts to form concentrated sulfuric acid. 1 The diagrams show the apparatus used to obtain crystals of calcium chloride from a mixture of solid calcium chloride and solid calcium carbonate. 1 The apparatus shown is set up. INSTRUCTIONS TO CANDIDATES. Paper 1 Multiple Choice May/June 2005. 1. The total mark for this paper is 40. [Turn over. The number of marks is given in brackets [ ] at the end of each question or part question. Aqueous potassium hydrogensulfate, KHSO4(aq), contains the ions K+(aq), H+(aq) and SO4 2–(aq). cotton wool soaked in concentrated hydrochloric acid. 0 g of powdered malachite to the conical flask, replace the bung and start a stop-clock. It does not indicate the details of the discussions that Any blank pages are indicated. Register Now. the for the questionthe standard of response required by a candidate as exemplified by the standa. Br2(aq) + 2e– → 2Br –(aq) 2I–(aq) → I2(aq) + 2e–. Each correct answer will score one mark. IB21 11_0620_22/3RP UCLES 2021. (b) increase reaction 2 Vr > Vp. IB20 06_0620_22/2RP UCLES CHEMISTRY 0620/61 Paper 6 Alternative to Practical October/November 2022 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Past Papers/AQA. INFORMATION. Remove the solids from the mixture to obtain sugar solution.
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