Diamonds Are Forever - Most of the Time!
Students examine the compositions and structure of diamonds. They conduct an experiment growing crystals, watch a video, and conduct Internet research.
7th - 10th Science 14 Views 32 Downloads
NASA Engineering Design Challenges - Spacecraft Structures
What kind of design challenges are there in building structures to support rocket engines? The unit takes design teams through the process of building the lightest possible thrust support structure that can withstand the necessary forces...
6th - 9th Science
New Review Network Solids and Carbon
Allotropes of carbon are a girl's best friend. Here's a video that covers the various networks of solids and carbon, including the process for changing graphite network structures to diamond and then back to graphite. The video concludes...
8 mins 9th - 12th Science
Convalent Networks, Metallic, and Ionic Crystals
If you've ever wondered why crystals are so strong and hard, Sal does a fine job of explaining, in chemistry terms, why this is so. Crystals are great examples of covalent networks; which are the strongest and hardest substances in the...
9 mins 7th - 10th Science
The 2,400-Year Search for the Atom
From ancient Greek philosophers to early American Quakers, people have sought to understand the composition of matter for millennia. Follow along with this video as it explores the long scientific journey that eventually led to the...
5 mins 5th - 12th Science CCSS: Adaptable