Some magnets have just one pole
truth or false ?

False

-A magnet can never have one pole, even a simple magnet was cut, each end would have an opposite south(-) or north(+) pull.
-This is the result of moving electrons

False
Every magnet has two poles, a  North pole, and another pole to counter that pole which would be a South pole. Magnetism is made through the pushing and pulling of magnetic electrons. A magnet can't be a magnet if opposites don't attract. Therefore, the statement made would be false.

The answers would be: 1: the liquid only contains one compound4: the liquid is a pure substance