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Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.3.2 Alloys.

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Presentation on theme: "Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.3.2 Alloys."— Presentation transcript:

1 Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.3.2 Alloys

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 fro past AQA GCSE examinations C1.3.2

3 Foundation Tier C1 June 12, 3 1. Version 2.0 Copyright © AQA and its licensors. All rights reserved.

4 1 continued Version 2.0 Copyright © AQA and its licensors. All rights reserved.

5 Mark scheme- Foundation Version 2.0 Copyright © AQA and its licensors. All rights reserved. QAnswerExtra InformationMark 1 (a) Aluminium has a low density Aluminium is resistant to corrosion 1111 1 (b)(i)(an alloy) is a mixture of metalsAccept (an alloy) can be a metal mixed with another metal or iron mixed with carbon/a non-metal 1 1 (b)(ii)Pure metals are soft Or alloys are hard Allow weak Allow strong/keep their shape Ignore rust/corrosion 1 Total 4

6 Higher Tier, C1 Jan 12, 4 1. Version 2.0 Copyright © AQA and its licensors. All rights reserved.

7 1 continued Version 2.0 Copyright © AQA and its licensors. All rights reserved.

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11 Mark scheme- Higher Version 2.0 Copyright © AQA and its licensors. All rights reserved. QAnswerExtra InformationMark 1 (a)(i)ReductionAccept redox/smelting 1 1 (a)(ii)3 4 3 1 1 (b)(i)55Ignore other units 1 1 (b)(ii)waterAccept sodium hydroxide Accept correct formulae H 2 O or NaOH 1 1 (b)(iii)Any one from Save energy/fuel for transporting the ore (old) quarries nearby for waste/red mud Accept less (cost of) transport allow transport quickly

12 Mark scheme- Higher continued Version 2.0 Copyright © AQA and its licensors. All rights reserved. QAnswerExtra InformationMark 1cEnvironmental Any one from Less mining/quarrying (of bauxite) Less landfill space needed/used Less use of fossil fuels/energy Less carbon dioxide produced Ethical or Social Any one from Saves resources Creates (local) employment More people aware of the need to recycle Allow loss of habitat/less qualified noise pollution Allow less red mud/waste Allow using resources more than once If answers reversed and both correct award one mark Allow less qualifies noise pollution if not given in environmental 1111 Total 7

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