Chemical composition of ancient rocks Iron sulfide can only exist in rocks that were formed before there was oxygen in the atmosphere. Rocks containing iron oxide can only form if oxygen is present.

Just about everyone knows that water is H2O, meaning two hydrogen atoms and one oxygen atom. What might surprise people is ...

Chiefly, the finding could help explain why Pluto, the largest known object in the Kuiper Belt — a vast region of icy bodies ...

Co-invented by Teri and Lee Mathis, seasoned professionals in the water treatment industry, they have been advocating and ...

The behavior of catalysts that promote chemical reactions is not always straightforward. For example, adding oxygen enhances ...