Crystalline solids represent structures with well-organized patterns and shapes.
Concept #1: Crystalline Solids
Unlike crystalline solids, amorphous solids represent structures that lack an organized patterns or shapes.
When examining the particles within a crystal you may observe them tightly packed in an organized pattern. The smallest portion of which is termed the unit cell.
There are 7 crystal systems and 14 types of unit cells that naturally occur. The simple cubic unit cell represents one of the simplest types.
Concept #2: Simple Cubic Unit Cell
The Simple Cubic Unit Cell is composed of a cube with an atom at each corner. In the Lattice Diagram each of the unit cells are combined to form a crystal lattice. In the Space Filling Unit Cell Diagram we are shown that the unit cell uses only 1/8 of each of the 8 corner atoms.
The body-centered cubic unit cell is composed of a cube with one atom at each of its corners and one atom at the center of the cube.
Concept #3: Body Centered Cubic Unit Cell
The face-centered cubic unit cell is composed of a cube with one atom at each of its corners and one atom in the center of each cube face.
Concept #4: Face Centered Cubic Unit Cell
Example #1: Unit Cell Calculations 1
Example #2: Unit Cell Calculations 1
Example #3: Unit Cell Calculations 1
Example #4: Unit Cell Calculations
Example #5: Unit Cell Calculations 2
Example #6: Unit Cell Calculations 2
Example #7: Unit Cell Calculations 2
Example #8: Unit Cell Calculations 3
Example #9: Unit Cell Calculations 3
Example #10: Unit Cell Calculations 3