Describe an activity to show how and iron nail can be magnetized. 0th
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nswer:
It is a rearrangement of the atoms already present, without changing their form chemically.
Explanation:
A chemical change is the result of a change in the atomic structure of an atom - a gain or loss of electrons.
Magnetization simply aligns the existing iron atoms in a certain way due the effect of a magnetic field on their dipole characteristics. It does not change the chemical composition or structure of the iron atoms in any way.
sabanaz20032001:
just a minute
The fastest way to magnetize a nail involves creating prolonged contact with a permanent magnet of sufficient strength. You can purchase permanent magnets in hardware and hobby supply stores and even in junkyards. Often made of hard steel, permanent magnets retain their magnetism once they’ve been magnetized. If
Rubbing the nail with the permanent magnet causes a stronger, more lasting magnetism in the nail. For this to work, only one pole of the magnet must stroke the nail from one end to the other in a single direction. The magnet must be lifted completely off the nail after each stroke before beginning the next one. The nail’s magnetism increases with each stroke. It usually takes around 20 to
The third method of magnetizing a nail uses electromagnetism and requires a length of insulated copper wire, some pliers and a battery or series of batteries taped together. Expose about an inch of copper wire from either end of the wire, and wrap the middle portion of the wire tightly about the nail. More wraps of wire will give you a stronger magnet. Attach each exposed end of the copper wire to opposite battery terminals to complete the electromagnet.
To make the class understand that the magnetism created was only temporary, the teacher can then demonstrate ways of demagnetizing the nail. To demagnetize a nail magnetized by prolonged contact or rubbing, banging the nail on a hard surface or dropping it to the floor shakes up the aligned atoms with sharp impact. For the electromagnet, simply detaching one end of the copper wire from its terminal kills the magnetic field.
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