A bell maker uses bronze containing about 88% copper and 12% tin.
The bell maker considers changing the composition of the bronze.
Statement 1: Increasing the percentage of tin would leave the properties unchanged because the alloy would still contain copper and tin.
Statement 2: Replacing all the tin with copper would make the layers of atoms more regular, so they could slide over each other more easily.
Statement 3: Replacing the tin with zinc would still produce bronze, provided that copper remained the main element.
Statement 4: Different proportions of copper and tin may be chosen to give the alloy properties suited to a particular use.
Which statements are correct?
1 and 2 only
1 and 3 only
3 and 4 only
2 and 4 only
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.