A research team has produced the first direct experimental evidence that Earth’s iron core traps hydrogen inside nanoscale ...

Hydrogen, the most abundant element in the universe, is found everywhere from the dust filling most of outer space to the cores of stars to many substances here on Earth. This would be reason enough ...

Atomic size measurements like van der Waals and covalent radii are central to chemistry, but are they grounded in reality?

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

How do we know water is H2O if we can't see the atomic structure and how are the elements identified? originally appeared on Quora: the knowledge sharing network where compelling questions are ...