• Question: why do metals exchange electrons in the way that they do?

    Asked by ferretman 1 to Aimee on 18 Nov 2015.
    • Photo: Aimee Goodall

      Aimee Goodall answered on 18 Nov 2015:

      There is a perfect number of electrons each element can have, except many don’t have the right number so join with others so that all the spaces they have for electrons are free.
      Imagine you are on a school trip and there are two classes going, each has there own bus. When you get on the bus you sit so that everybody has two seats each, and the other class does that too. Then the teacher realises they only need one bus so gets everybody to have one seat each! The metals so the same, they realise where there are spaces for the electrons and try and spend as less energy as possible by joining up!

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