Roughly speaking, there are only two options here: either a component reacts to the magnet, or it doesn't. This means that you can easily have a mixture of two substances that either both react to the magnet, or none of them reacts to it, so that you can't use the magnet to separate them.
No!The smallest particle in which a magnet still has the same magnetic properties is a called a domain. If you split this domain into other remnants, then that particle shall seize to become a magnet and shall just be a piece of matter
No, but it is only a matter of time before somebody produces one.
No. No matter how far you divide a magnet down, there will always be two poles: North and South. Well ; there is actually a domain in magnets which divides it into N and S. If the magnet is smaller than that, ie a few nanometers, then you can have unipolar magnets. In fact , such objects have been synthesized.
Not much is currently known about dark matter, but it obviously doesn't react in the same way as normal matter does.
no
Technetium is paramagnetic.
React to the nearby presence of another magnet
A Magnet itself is in fact a solid.
Physics is the study of how energy and matter react.
Yes, if the substance has magnetic properties.
The pull of the magnet will over ride the earths magnetism. So the compass will react to the magnet as it passes through its field.
they repel each other
no, magnet needs to be close to winding, not touching it
Cold causes matter to contract. Heat causes matter to expand.
The magnet would still have a north and a south pole. No matter how small the magnet is it will always have a north and south pole.
chemical property