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6.1 Improving processes and products

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Question 48

A metalworker makes an alloy using the masses shown in the table.

ElementMass (g)
Copper792
Tin108
a.

Calculate the percentage by mass of copper in the alloy.

[2]
b.

The alloy is used to make a propeller for a boat that operates in sea water.

Identify the alloy and explain why it is suitable for this use.

[5]
Markscheme

6.1 Improving processes and products Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Improving processes and products

136 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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