A molecule is a group of atoms bonded together. Molecules make up nearly everything around you – your skin, your chair, even your food. They vary in size, but are extremely small. You can’t see an ...

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 ...

You may have noticed that the rock formations are very different colors. The rock formations on the left are from Red Rock State Park in Texas, and on the right is El Capitan Mountain in Yosemite ...