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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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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