Six important properties of a bar magnet:
1. A magnet attracts magnetic substances (like iron, steel, cobalt, nickel) towards itself.
2. When a magnet is suspended freely, it points in the north-south direction.
3. Similar poles of magnets repel each other.
4. Opposite poles of magnets attract each other.
5. When a magnet is broken, then each broken piece is a complete magnet with a new pair of poles.
6. If a magnet is heated or handled roughly, it loses its magnetism.