1. Chapter 12: Solids & Modern materials
Dr. Aimée Tomlinson
Chem
1212

2. Classification, Crystalline, and Amorphous Solids
Sections
Classification, Crystalline, and Amorphous Solids

3. Two Main Types of Solids
Crystalline Solids
Have a cubic array of tightly packed atoms or molecules
Ionic Solids
Composed of cations/anions
Atomic Solids
Composed of a single atom
Molecular Solids
Composed of molecules
Copyright Oliver Kreylos, Center for Image Processing and Integrated Computing (CIPIC), University of California, Davis.
commons.wikimedia.org/wiki/File:Hex_ice.GIF
Amorphous:
Are complete disordered and have no repeat unit

4. Metallic Solids
lattice: refers to the 3D array of particles in a crystalline solid
lattice points: are the points of array that are occupied by a particle
unit cell: basic repeating unit of the particle arrangement in a crystalline solid
Three types of solid arrangements:
X 3
Simple Cubic
Body-Centered Cubic
Face-Centered Cubic
* 8 corners +
6 faces
* 1/2 for face
* 8(1/8) + 6(1/2)
= 4
* 8 corners +
1 body
* 1 for body
* 8(1/8) + 1= 2
* 8 corners
* 1/8 for ea.
* 8(1/8) = 1
One atom present in cube
Two atoms present in cube
Four atoms present in cube

5. Section
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