GCSE Science March 2007 Chemistry 1B Paper Ans Key

abc General Certificate of Secondary Education Science A 4461 Chemistry 4421 CHY1B F & H Objective Test Answer Keys March 2007 examination series Version : 1.0Answer keys are prepared by the Principal Examiner and considered, together with the relevant questions, by a panel of subject teachers. Further copies of these answer keys are available to download from the AQA Website: www.aqa.org.uk Copyright © 2007 AQA and its licensors. All rights reserved. COPYRIGHT AQA retains the copyright on all its publications. However, registered centres for AQA are permitted to copy material from this booklet for their own internal use, with the following important exception: AQA cannot give permission to centres to photocopy any material that is acknowledged to a third party even for internal use within the centre. Set and published by the Assessment and Qualifications Alliance. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales (company number 3644723) and a registered charity (registered charity number 1073334). Registered address: AQA, Devas Street, Manchester M15 6EX Dr Michael Cresswell Director GeneralScience A/Chemistry – CHY1B (Oils, Earth and Atmosphere) -AQA GCSE Answer Keys March 2007 series 3 CHY1B (Oils, Earth and Atmosphere) Foundation Tier Question Key One A alkanes 2 B fuels 1 C monomers 4 D polymers 3 Two A carbon dioxide 1 B nitrogen 3 C noble gases 4 D oxygen 2 Three A ethanol 2 B ethene 4 C helium 1 D poly(propene) 3 Four A bromine 2 B hydrogen 3 C nickel 4 D water 1 Five A analysis 2 B combustion 4 C condensation 3 D convection 1 Six A hydrocarbons undergo thermal decomposition 3 B hydrocarbons are heated 1 C hydrocarbons vaporise 2 D small hydrocarbon molecules 4 A B C D Seven 3 1 3 3 Eight 3 4 4 1 Nine 2 2 2 4 Science A/Chemistry – CHY1B (Oils, Earth and Atmosphere) -AQA GCSE Answer Keys March 2007 series 4 CHY1B (Oils, Earth and Atmosphere) Higher Tier Question Key One A hydrocarbons undergo thermal decomposition 3 B hydrocarbons are heated 1 C hydrocarbons vaporise 2 D small hydrocarbon molecules 4 Two A 2 B 4 C 3 D 1 A B C D Three 3 4 4 1 Four 2 2 2 4 Five 4 4 3 1 Six 3 2 4 2 Seven 2 3 3 2 Eight 4 4 2 3 Nine 4 1 3 4