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 ...

The periodic table is one of the triumphs of science. Even before certain elements had been discovered, this chart could successfully predict their masses, densities, how they would link up with other ...

Type element symbols (He) or full names (Helium) to fill the table. Capitalization doesn’t matter. Shea Murphy is a UX designer at C&EN, where he designs digital experiences and leads digital ...

Two women hold tweezers and meticulously place small balls into small dents in a wooden board. American Chemical Society members volunteer time to place small balls into small dents to help finish a ...