1. Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.5.3 Ethanol

2. Using Exam pro items to support successful outcomes Version 2.0 Copyright © AQA and its licensors. All rights reserved. Learners will be able to test their progress against learning outcomes using questions from past AQA GCSE examinations

3. Foundation tier C1 June 12, 6 Version 2.0 Copyright © AQA and its licensors. All rights reserved.

6. Mark scheme- Foundation Version 2.0 Copyright © AQA and its licensors. All rights reserved. QAnswerExtra InformationMark (a) 6 oxygen 1111 (b) (i)Heating the hydrocarbon to a high temperature The presence of a catalyst 1111 (b) (ii)All bonds correct Four C-H bonds and one C=C bond 1 (b)(iii)WaterAccept hydrogen oxide/steam Allow H 2 O 1 ( c)(i)Carbon dioxideAllow CO21 ( c) (ii)By filtering/decanting/centrifuging ( to remove the yeast) (fractional) distillation (to separate ethanol from water) Ignore sieving Accept a description of (fractional) distillation 1111 Total 9

7. HigherC1 June 12, 7 Version 2.0 Copyright © AQA and its licensors. All rights reserved.

9. Mark scheme- Higher Version 2.0 Copyright © AQA and its licensors. All rights reserved. QAnswerExtra InformationMark (a) C 2 H 4 A correct other answer and balanced eg C 4 H 10 1111 (b)Bubbling/fizzing/frothing/effervescenc e Ignore gas given off or solution goes cloudy 1 ( c)See next slide for detail 5 Total 8

10. Mark scheme- Higher c. Any 5 from the following. For full marks there must be advantages and disadvantages and their importance included Advantages Sugar cane/plants absorb carbon dioxide/photosynthesise Sugar cane/plants are renewable/sustainable Low energy process Disadvantages Large areas of land are needed Land could be used for food crops Slow process Ethanol is impure or contains 50% ethanol Batch process The crop yield/supply of ethanol is unreliable A justified conclusion Version 2.0 Copyright © AQA and its licensors. All rights reserved.