CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) Data Booklet
May/June 2010 1 hour
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.
This document consists of 13 printed pages and 3 blank pages.
IB10 06_9701_13/RP © UCLES 2010
2 Section A For each question there are four possible answers, A, B, C, and D. Choose the one you consider to be correct. 1 Which gas closely approaches ideal behaviour at room temperature and pressure? A B C D 2 ammonia carbon dioxide helium oxygen
Use of the Data Booklet is relevant to this question. The elements radon (Rn), francium (Fr) and radium (Ra) have consecutive proton numbers in the Periodic Table. What is the order of their first ionisation energies? least endothermic A B C D Fr Fr Ra Rn Ra Rn Fr Ra most endothermic Rn Ra Rn Fr
Use of the Data Booklet is relevant to this question. What could be the proton number of an element that has three unpaired electrons in each of its atoms? A 5 B 13 C 15 D 21
Given the following enthalpy changes, I2(g) + 3Cl2(g) → 2ICl3(s) I2(s) → I2(g) ∆Ho = –214 kJ