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double replacement reaction

n.
1.a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound

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    Idiom of the Day

    leave (someone) flat
    to fail to entertain or stimulate someone, to leave someone with no money
    My attempt at making a joke left everyone in the room flat.



    1.
    Mrs Ashton: Well, that's good ________ .

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