anonymous
  • anonymous
PLEASE HELP<3 Chances are you have some magnets in your home right now. To what kinds of substance will they stick? Why do you think a magnet will stick to your refrigerator door and not to an aluminum pan? Why are some magnets stronger than others? How does a compass use a magnet to point you toward Earth’s north pole? Think about these questions and fill in the columns of the Magnets KWL chart. Be sure to fill in the last column to show what you have learned.
Physics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
wow, a lot of questions
anonymous
  • anonymous
magnet only attract those substances which contains domains(they are inside the substance,and act as magnets),which in the influence of magnetic field,can align themselves regularly.Magnets which have stronger field i.e. large area of affect are strong,due to chemical intricacy.The compass needle is itself a magnet.The earth contains a magnetic field and exerts magnetic field,like a magnet contains north and south pole.so a magnet/compass when hanged freely,align itself in the dir of Earths magnetic north pole
JamesJ
  • JamesJ
What determines which metals have 'domains' vs. not? Why is iron more magnetic than aluminum?

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anonymous
  • anonymous
Electrons traveling around a nucleus can be thought of as a current loop and will generate a magnetic field. Since filled electron orbitals contain an even amount of electrons the magnetic moment of one electron will cancel with another in a filled orbit. So what we care about are the valence electrons. Aluminum has some valence electrons and thus is magnetic. But the magnetic moment (north pole and south pole) are continually changing due to heat exchanges with the environments. So its a weak magnet overall. The good magnets are materials where the magnetic moment (north pole south pole) caused by electron orbit can allignt itself with all the other magnetic moments in the material in the presence of a magnetic field. Materials whose electrons do this are referred to as ferromagnetic materials and Iron and most things we think of as magnetic are this type of material.
anonymous
  • anonymous
Thanks you guys! You rock :)

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