A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile.
Which of these statements best describes the contents of the pile?
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It is a mixture of iron and sulfur
It is a compound that contains iron and sulfur
It is a compound that can be separated using a magnet
It is a mixture that can be separated using a chemical reaction