American Chemical Society
Recrystallization Test
Crystallize the answer to the question that has been investigated since the first of four lessons: What is the unknown crystal? Pupils have examined, crushed, and dissolved four samples plus an unknown as an exploration of the properties...
Science Buddies
Science Buddies: Project Ideas: Crazy Crystal Creations: Grow Crystals
Compare the size and shape of crystals grown in different temperature conditions in this science fair project. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by...
Untamed Science
Untamed Science: Biology: Evolution: How to Become a Fossil
Learn about what a fossil is, the different types that scientists use for study, and processes that form them. [2:57]
Cosmo Learning
Cosmo Learning: Chemistry Laboratory Techniques
A collection of video lectures about the lab technique of thin-layer chromatography. The videos give a step-by-step demonstration of the analytical technique from the beginning to the end. The demonstrations is broken down into five...