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emr564
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For example, on this website http://www.chemguide.co.uk/physical/redoxeqia/combinations.html in the second diagram from the top, it shows that *if a high resistance voltmeter is placed between two pieces of metal, zinc and copper, the zinc metal will accumulate a build up of electrons.* Then when the resistance is relieved, the electrons will necessarily flow to the copper metal, which I understand.
What I'm confused about is: why do electrons build up on the zinc metal in the first place, and where do the electrons come from?
Thank ya.
What I'm confused about is: why do electrons build up on the zinc metal in the first place, and where do the electrons come from?
Thank ya.