What is the longest word ever to appear in print in English? There's a lot of confusion and misinformation on the subject. But when I set out to write about the periodic table, I was hopeful I would ...

The periodic table is like a map that organizes elements based on their atomic structure and properties. It helps scientists and students study and understand the vast variety of elements and how they ...

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 ...