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ngkamsengpeter
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I want to know that why magnet attract only metal but not all thing . Since all thing are made up of atom, what make the metal so difference so that it can be attract by a magnet ?
Wikipedia
Something that is strongly attracted to a magnet is said to have a high permeability. Iron and steel are two examples of materials with very high permeability, and they are strongly attracted to magnets. Liquid oxygen is an example of something with a low permeability, and it is only weakly attracted to a magnetic field. Water has such a low permeability that it is actually repelled by magnetic fields. Everything has a measurable permeability: people, gases and even the vacuum of outer space.
Chaos' lil bro Order said:Extremely powerful magnets can even attract strawberries for example, metal just happens to have 2-3 valence electrons extra per atom and the surface of metal has free charges that can easily be attracted by a magnet. Also, metals have little sectors in their structures that contain magnetic moments that can be attracted to or unattracted to a magnet depending on the polarization of the sectors relative to the magnet's polarization (opposites attract).
In general, compounds that are conductors (like metals) are easily magnetized, while compounds that are insulators (like plastics, glasses, woods) are difficult to magnetize. Although this is just a guideline and not absolute.
ngkamsengpeter said:What is mean by permeability?
rachmaninoff2 said:This is all dead wrong. Since when are free charges attracted to magnets?
Please refrain from "explaining" subjects which you know nothing about.
Are you refuting my whole post or just a piece of it?
Magnets only attract metals because metals have electrons that are free to move around and align with the magnetic field of the magnet. This creates a force of attraction between the magnet and the metal object.
The attraction between metal and magnets is due to the alignment of the electrons in the metal atoms with the magnetic field of the magnet. This creates a magnetic force that pulls the metal object towards the magnet.
No, not all metals can be attracted to magnets. Only certain metals, such as iron, nickel, and cobalt, are naturally magnetic and can be attracted to magnets. Other metals, like aluminum and copper, are not attracted to magnets.
This is because only certain metals have electrons that are free to move and align with the magnetic field of the magnet. These metals are called ferromagnetic metals and include iron, nickel, and cobalt. Other metals, like aluminum and copper, do not have this property and therefore are not attracted to magnets.
Magnets can attract metals from a distance because they create a magnetic field around them. This magnetic field can exert a force on other magnetic objects, such as metals, even if they are not in direct contact with the magnet.