Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.3.2 Alloys.
Transcript of Version 2.0 Copyright © AQA and its licensors. All rights reserved. C1.3.2 Alloys.
Version 2.0 Copyright © AQA and its licensors. All rights reserved.
C1.3.2 Alloys
Using Exam pro items to support successful outcomes
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• Learners will be able to test their progress against learning outcomes using questions fro past AQA GCSE examinations
• C1.3.2
Foundation Tier C1 June 12, 31.
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1 continued
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Mark scheme- Foundation
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Q Answer Extra Information Mark1 (a) Aluminium has a low density
Aluminium is resistant to corrosion
11
1 (b)(i) (an alloy) is a mixture of metals Accept (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 softOralloys are hard
Allow weakAllow strong/keep their shapeIgnore rust/corrosion
1
Total 4
Higher Tier, C1 Jan 12, 4 1.
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1 continued
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Copyright © AQA and its licensors. All rights reserved.
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Mark scheme- Higher
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Q Answer Extra Information Mark1 (a)(i) Reduction Accept redox/smelting 1
1 (a)(ii) 3 4 3 1
1 (b)(i) 55 Ignore other units 1
1 (b)(ii) water Accept sodium hydroxideAccept correct formulae H2O or NaOH
1
1 (b)(iii) Any one fromSave energy/fuel for transporting the ore(old) quarries nearby for waste/red mud
Accept less (cost of) transport allow transport quickly
Mark scheme- Higher continued
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Q Answer Extra Information Mark1c Environmental
Any one from•Less mining/quarrying (of bauxite)•Less landfill space needed/used•Less use of fossil fuels/energy•Less carbon dioxide producedEthical or SocialAny one from•Saves resources•Creates (local) employment•More people aware of the need to recycle
Allow loss of habitat/less qualified noise pollutionAllow less red mud/waste
Allow using resources more than once
If answers reversed and both correct award one markAllow less qualifies noise pollution if not given in environmental
1
1
Total 7