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5. If iron is a ferromagnetic metal, why don't all pieces of iron act as permanent magnets? A Some iron atoms have no intrinsic magnetic moment. B Once a piece of iron has been heated to the point that it loses its magnetism, it can never become a magnet again. C The statement of the question is false: all pieces of iron do act as permanent magnets. D In the absence of an external magnetic field, the magnetic domains in a piece of iron are oriented in random directions, so their magnetic moments cancel out and the overall magnetic moment of the entire piece is effectively zero.

          5. If iron is a ferromagnetic metal, why don't all pieces of iron act as permanent magnets?
A Some iron atoms have no intrinsic magnetic moment.
B Once a piece of iron has been heated to the point that it loses its magnetism, it can never become a magnet again.
C The statement of the question is false: all pieces of iron do act as permanent magnets.
D In the absence of an external magnetic field, the magnetic domains in a piece of iron are oriented in random directions, so their magnetic moments cancel out and the overall magnetic moment of the entire piece is effectively zero.

5. If iron is a ferromagnetic metal, why don't all pieces of iron act as permanent magnets?
A Some iron atoms have no intrinsic magnetic moment.
B Once a piece of iron has been heated to the point that it loses its magnetism, it can never become a magnet again.
C The statement of the question is false: all pieces of iron do act as permanent magnets.
D In the absence of an external magnetic field, the magnetic domains in a piece of iron are oriented in random directions, so their magnetic moments cancel out and the overall magnetic moment of the entire piece is effectively zero.

Added by Laurie G.

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