Crystal Structures
Crystal Structuresis one of the most colorful and exciting modules. The seven crystal systems are
modeled and presented so that the user can clearly see the similarities and differences
between the systems. Bravais Lattices for the cubic system are demonstrated. We include
ball and stick models as well as space-filling representations to prepare the student for
closest-packed structures and ionic lattices. The program allows the user to expand,
rotate, and construct representative ionic and metallic crystal lattices. The concepts
of radius ratio and methods for determining stoichiometry from lattice structures allows
students to visualize and understand the structure of ionic salts.
In this screenshot, a demonstration of how to determine
the stoichiometry of a salt by counting the number of ions in the unit cell is visible.
This display is obtained by pressing the count button in the control panel in the middle
of the right hand side.
In this screenshot a technique for determining the
volume occupied by simple cubic, face centered cubic, and body centered cubic unit
cells is shown.
Back to Crystal Structures index.
Over to Crystal Structures quiz.
Back to Chemical Bonding index.
All images on this web page are copyright © 1995
Michigan State University Board of Trustees
Questions about this software? Send E-mail to Dr. Galloway
or Dr. Hunter
if you have any comments on this web page feel free to make your thoughts known!
Last update: 2:46PM 11/28/95
http://www.cem.msu.edu/~gencem/cryst/cryst/index.html
In this screenshot, a demonstration of how to determine
the stoichiometry of a salt by counting the number of ions in the unit cell is visible.
This display is obtained by pressing the count button in the control panel in the middle
of the right hand side.
In this screenshot a technique for determining the
volume occupied by simple cubic, face centered cubic, and body centered cubic unit
cells is shown.