UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education
CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended)
October/November 2008 45 Minutes
READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and candidate 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 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 16. You may use a calculator.
This document consists of 15 printed pages and 1 blank page. IB08 11_0620_01/RP © UCLES 2008
2 1 In which substance are the particles furthest apart at room temperature? A B C D 2 ethanol methane salt sugar
An experiment is carried out to separate a mixture of two dyes. A line is drawn on a piece of chromatography paper and a spot of the dye mixture placed on it. The paper is dipped into a solvent and left for several minutes.
paper spot of mixture of dyes
beaker solvent level solvent
Which statement about this experiment is correct? A B C D 3 The dyes must differ in their boiling points. The dyes must differ in their solubilities in the solvent. The line must be drawn in ink. The line must be placed below the level of the solvent.
An aqueous solution contains barium iodide. It is possible to obtain a solution that contains Ba2+(aq) but no I–(aq) by adding ……1…… until no more ……2…… precipitate forms. Which words correctly complete gaps 1 and 2? 1 A B C D aqueous lead(II) nitrate aqueous lead(II) nitrate dilute sulphuric acid dilute sulphuric acid 2 white yellow white yellow
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3 4 A solid mixture contains an ionic salt, X, and a covalent organic compound, Y. Two students suggested methods of separating the mixture as shown.
Y 1 shake with water X+Y solution of X
X 2 shake with ethanol X+Y
Which methods of separation are likely to work? 1 A B C D 2
solution of Y
What do the nuclei in hydrogen molecules contain? A B C D electrons and neutrons electrons and protons neutrons only protons only
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4 6 The diagram shows part of the Periodic Table.
Which element is correctly matched with its electronic structure? element A B C D W X Y Z electronic structure 2,8,1 2,4 2,8,2 2,8
Which of the following compounds exist? RaAr A B C D RbBr
Which particle is an ion? number of protons A B C D 1 3 6 11 number of neutrons 0 4 6 12 number of electrons 1 3 6 10
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5 9 The diagram shows a molecule of hydrogen fluoride.
In the molecule hydrogen fluoride, HF, A B C D the hydrogen and fluorine share a pair of electrons. the hydrogen and fluorine share a pair of protons. the hydrogen gives the fluorine an electron. the hydrogen gives fluorine a proton.
10 Lead(II) nitrate can be decomposed as shown. xPb(NO3)2 → yPbO + zNO2 + O2 Which numbers x, y and z balance the equation? x A B C D 2 2 2 4 y 2 2 4 4 z 2 4 4 2
11 Carbon and chlorine form a chloride. What is the formula of this chloride? A CCl2 B CCl4 C CaCl2 D CaCl4
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6 12 Which diagram shows an experiment in which the bulb lights?
carbon rods cable: plastic steel aluminium bitumen heat C D
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