Scientists have identified another possible commonality between Earth and Mars: a solid inner core. Scientists have ...

The iron filings are attracted to the magnet, but the sand is not. A mixture of iron filings and sulfur powder could be separated in exactly the same way. A beaker containing a mixture of ...

Protein-bound iron-sulfur ([Fe-S]) clusters, which are polynuclear combinations of iron and sulfur atoms, are among the most structurally and functionally versatile cofactors in biology 1. [Fe-S ...

It is made of only one type of atom: iron atoms. Sulfur is another element. It contains only sulfur atoms, and nothing else, so it is pure. When we mix two different pure substances together ...