Water is essential for all chemistry and life, yet understanding how it interacts with dissolved ions—such as sodium and ...

Water is everywhere – it covers the major part of Earth, circulates in the human body, and is found even in the smallest ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Winter in Pennsylvania is quickly approaching, bringing cold weather and icy roads that require plowing and salting. At ...

We've gone to the bottom of the ocean to study how its chemistry shapes our planet's climate, even chasing lava-spewing ...

A newly identified chemical byproduct may be present in drinking water in about a third of U.S. homes, a study found. Scientists do not yet know whether the byproduct is dangerous. But some are ...