Of course. Electrical and magnetic forces do not need a medium to exist. That is why you can see the light from the Sun and why you can feel the effects of the sun's magnetic field on the earth (high up in the atmosphere). read more
A magnet is a metal that can pull pieces of iron toward itself and make them cling to it. A horseshoe magnet pointed at a clip will make it jump up from a table and cling to the magnet until it is pulled off. The horseshoe magnet has two poles, or ends, a positive and a negative one. read more