State three properties of a bar magnet.

A freely suspended magnet always comes to rest pointing roughly north and south. Like poles repel and unlike poles attract. The magnetic force is strongest at the poles and a magnet always has two poles, so breaking it gives two smaller magnets rather than isolated poles.

No citable source has been recorded for this record. Treat it as practice material, not as fact.

Explanation

Repulsion is the sure test for magnetism, because attraction also occurs with an unmagnetised piece of iron.