In this video, we explore the fundamental question: Why does changing just one proton in the nucleus of an atom create a different element? The number of protons in an atomic nucleus determines the ...

For new, human-made heavy elements on the periodic table, being “too ‘big’ for your own good” often means instability and a fleeting existence. The more protons and neutrons scientists squeeze ...

Many space-lovers know the phrase “We are all made of star stuff.” And it’s true — our planet formed from the dust cloud left over from the formation of our Sun, and from the planet, all life. That ...

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 ...