Why does changing just one proton in the nucleus of an atom create a different element? The number of protons in an atomic ...

DEEP in the heart of every atom lurk protons, tiny particles from which the chemical elements were forged, first in the searing heat of the big bang and then in the nuclear furnaces of stars. The ...

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 ...

A number of advanced energy technologies—including fuel cells, electrolyzers, and an emerging class of low-power ...