IGCSE Chemistry 0620/21/O/N/21 Q4

Question

4 Which statement explains why metals conduct electricity when solid?

A They have atoms which are free to move.
B They have electrons which are free to move.
C They have molecules which are free to move.
D They have positive ions which are free to move.

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Answer ( 1 )

    0
    2022-05-13T13:34:30+08:00

    Metals have a sea of mobile electrons moving around the atoms.

    Ans: B

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