Chemistry

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which is an example of physical change
1.water decomposing into hydrogen and oxygen
2.potassium and bromine combining to form potassium bromide
3.solid ice melting into liquid water
4.none of the above

i think its 3.

  • Chemistry -

    A physical change in a substance doesn't change what the substance is.

    I also think it is 3.

    It couldn't be 1 or 2.

  • Chemistry -

    3 it is.

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