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Principle
In this experiment students examine the reaction of metals in salt solutions. Students put iron or iron wool into a copper sulfate solution and solid copper into an iron sulfate solution. With this experiment students learn that metals can be deposited from a salt solution of a nobler metal (reduction reaction) with the help of a solid metal (which is less noble). The solid metal itself is oxidized and the ions dissolves into soltion (oxidation reaction).
Learning objectives
- Solid metals usualy react with noble metal ions, but noble, solid metals mostly do not react with metal ions
- Reduction reaction is always linked with an oxidation reaction
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