Zinc-plating Copper and the Formation of Brass –'Turning Copper into ‘Silver’ and ‘Gold’'

5
0
4
0
3
0
2
0
1
0
0
Rate this resource

In this classic demonstration, from the Royal Society of Chemistry, a copper coin is plated with zinc using a solution of sodium zincate in the presence of zinc, the coin will appear silver. When the coin is heated, the zinc and copper form an alloy of brass and so the coin appears gold.

The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching tips.

Curriculum links include: electrochemistry, electroplating, alloys

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

Published by

Actions

Share this resource

Lists that tag this content