Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.6.1 Vegetable Oils.

Version 2.0 Copyright © AQA and its licensors. All rights reserved.

C1.6.1 Vegetable Oils

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

Foundation Tier C1 June 12, 5

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Mark Scheme - Foundation

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Q Answer Extra Information Mark

(a)(i) Olive oil does not dissolve in water 1

(a)(ii) (the mustard is) an emulsifier Accept an emulsion has been formed 1

(b)(i) Double 1

(b)(ii) Add bromine water- turns colourless 1

(c)(i) Because the (olive) trees/plants/crops/leaves/fruit absorb/use carbon dioxide

Allow carbon for carbon dioxideAllow carbon dioxide is used in photosynthesis

1

(c)(ii) Any one from•Olive oil is a food•Olives are slow growing•Olives require a lot of land•Not enough olive trees/oil•Olive oil dense/viscous/high boiling point

Ignore habitatsIgnore gives off carbon dioxide

1

Higher C1 June 12, 6

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Mark Scheme - Higher

Version 2.0

Copyright © AQA and its licensors. All rights reserved.

Q Answer Extra Information Mark

(a)(i)

Olive oil does not dissolve in water Accept olive oil and water are immiscibleAllow there is no emulsifier Ignore mustardIgnore do not mix/different densities

1

(a)(ii)

(the mustard is) an emulsifier or an emulsion forms or a suspension of oil in vinegar/.water forms or visa versaThe molecules have a ‘head’/hydrophilic end which dissolves in/attracted to oil

accept because an emulsifier is added

Accept diagram drawn showing this

1

11

(b) Test Add bromine waterResult turns colourless

Allow iodine (solution)Allow orange colour disappears/decolourisesIgnore clear

11

(c) (olive oil is reacted with) hydrogen using a nickel catalyst (at a temperature of about 60oC

Accept hydrogenatedAllow 50-120oCIgnore hot/heat

111

Total 9