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Transition metals, alloys and corrosion

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Question 68

After one week, two test tubes containing damp air were examined.

The findings are recorded in the table below:

Appearance after one week
Test Tube 1 (Iron nail wrapped in zinc wire)The zinc wire has corroded/dissolved, but the iron nail remains shiny and unchanged.
Test Tube 2 (Iron nail alone)A reddish-brown flaky deposit has formed on the surface of the iron nail.

Explain the results of this experiment.

[2]

Transition metals, alloys and corrosion Questions

  1. GCSE
  2. /Chemistry
  3. /Transition metals, alloys and corrosion

Practise Edexcel GCSE Chemistry Transition metals, alloys and corrosion with exam-style questions for Foundation and Higher tier. 97 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank