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unit 2 physics

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
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    can someone please help me to understand the plum pudding model please???? it makes 0 sense!

    (Original post by amzieee7)
    can someone please help me to understand the plum pudding model please???? it makes 0 sense!
    Think of a plum pudding - or a christmas pudding.
    You've got the majority of it as cake, and then embedded with plums/raisins (I think?)

    So, this was an OLD theory, and has been replaced by the Nuclear Model.

    But the cake bit, which makes up the majority of the pudding - which is the atom - is a ball of positively charged material. Meanwhile the plums/raisins represent the negative electrons which were buried in it.
    Hopefully this helps to explain: https://www.youtube.com/watch?v=JUJPyQtoB5E
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