Analytical Chemistry


How can metals be plated onto a surface?

Metals can be plated onto surfaces using a technique from electrochemistry called electroplating. Positively charged metal ions dissolved in a solution are attracted to a negatively charged electrode. This electrode reduces (gives electrons to) the positively charged metal ions, making them into a neutral metal species. The neutral metal is no longer soluble, so it forms a coating on the surface of the electrode.


Rechargable batteries work because the chemical reactions that occur inside them can be more easily reversed than in non-rechargable batteries.


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