Using materials (chemistry only)

EasyMedium
1234567891011121314151617
Question 17
Medium

This question is about alloys.

Sterling silver is an alloy of silver and copper.

Diagram showing the atomic arrangements of pure silver and sterling silver

a.

A sample of sterling silver has 3 copper atoms for every 22 silver atoms. Determine the percentage of atoms in this sample of sterling silver that are copper atoms.

[2]
b.

Explain why sterling silver is harder than pure silver. Complete the sentences:

  • "This is because the atoms of silver and copper have different _______________."
  • "Therefore, the layers of atoms cannot easily _______________."
[2]

Using materials (chemistry only) Questions

  1. GCSE
  2. /Chemistry
  3. /Using materials (chemistry only)