6.5 understand that magnetism is induced in some materials when they are placed in a magnetic field

Some materials can become magnetically induced when placed near a magnet.
For example if steel is placed near a magnet then it can become a magnet.

The closer to the magnet the material is placed, the more the magnetism is induced.

The poles are created opposite so...
If you place a north pole of a bar magnet against a bar of steel then the end facing the north pole would become a south pole.

6.3 describe the properties of magnetically hard and soft materials

Magnetically hard materials are materials that stay magnetised after they have been exposed to a magnetic field. An example of this is steel.

A magnetically soft material is one that becomes demagnetised after it leaves a magnetic field. An example of this is iron. It's used in transformers as it can be magnetised and demagnetised many times a second.

6.2 understand that magnets repel and attract other magnets and attract magnetic substances

In a magnet:
Opposite poles attract
Like poles repel

Magnets can also attract other magnetic materials such as iron.