In this activity, visitors learn that crystals are formed from repeating units and that crystal formation is a type of self-assembly. Visitors also discover that behaviors at the atomic and the molecular scales can result in macroscale structures that are visible to the human eye.
What self-assembly is
What crystals are
That crystal formation is due to the self-assembly of atoms and molecules
That super-saturated solutions can form crystals
That some reactions produce heat (some reactions are exothermic)
That using super-cooled solutions can speed up crystal formation
Developed for the NISE Network with funding from the National Science Foundation under Award Numbers 0532536 and 0940143. Any opinions, findings, and conclusions or recommendations expressed in this product are those of the authors and do not necessarily reflect the views of the Foundation.