From Wikibooks, open books for an open world
This page may need to be
reviewed for quality.
Jump to navigation
Jump to search
Name |
Equation |
Notes |
Subject
|
Attractive Force |
= = |
|
Bonding Forces and Energies
|
Repulsive Force |
|
|
Bonding Forces and Energies
|
Net Energy |
= = |
Where A= and B is found using an empirical plot |
Bonding Forces and Energies
|
% Ionic Character |
|
A ionic B Covalent X electronegativity |
Bonding
|
Density, Metal |
|
|
Density of Metals and Ceramics
|
Density, Ceramic |
|
|
Density of Metals and Ceramics
|
Atomic Packing Factor |
APF= |
Ceramic Crystal Structures
|
Degree of Polymerization |
|
|
Polymer Structures
|
Molar Weight Polymer |
|
|
Polymer Structures
|
Molar weight substituent |
|
|
Polymer Structures
|
number repeat units/ cell |
|
|
Crystallinity
|
% Crystallinity |
|
|
Crystallinity
|
Number of Vacancies |
|
|
Defects
|
Error function |
|
|
Diffusion
|
|
Term |
Definition |
Notes |
Subject
|
Bonding Energy |
Energy required to separate two atoms to and infinite separation |
Example |
Bonding
|
Polymer |
Having Many Mer |
|
Polymer Structures
|
Mer |
Base atom or structure that repeats |
|
Polymer Structures
|
Ceramic |
nonmetallic, w/ %IC |
|
Bonding
|
Covalent |
Shares electrons |
|
Bonding
|
Ionic |
Gives up/ gains electrons |
|
Bonding
|
Electronegativity |
How much electrons wanted |
|
Bonding
|
Crystal |
single ordered form |
|
Crystallinity
|
Linear Density |
|
|
Ceramic Crystal Structures
|
Planar Density |
|
|
Ceramic Crystal Structures
|
Number-average |
based off size of chain |
|
Polymer Structures
|
Weight-average |
based off weight of chain |
|
Polymer Structures
|
Thermoplastics |
Linear+branched w/ minimal cross linking, heat malliable |
|
Polymer Structures
|
Thermoset |
network w/ crosslinks, covalent bonds, decomposes under heat |
|
Polymer Structures
|
Copolymer |
Different repeat units |
|
Polymer Structures
|
Monopolymer |
Same repeat units |
|
Polymer Structures
|
Atomic Packing Factor |
Atoms/ unit cell |
|
Ceramic Crystal Structures
|
Unit Cell |
Smallest crystal pattern constituent |
|
Ceramic Crystal Structures
|
Cation |
Positive ion |
|
Bonding
|
Anion |
Negative ion |
|
Bonding
|
Coordination number |
Number of nearest neighbors |
|
Ceramic Crystal Structures
|
Stacking Sequence |
|
|
Ceramic Crystal Structures
|
Ceramic |
|
|
Bonding
|
Degree of Polymerization |
Average number of repeat units per chain |
|
Polymer Structures
|
crystalline material |
periodic array of atoms over large atomic distances |
|
Ceramic Crystal Structures
|
unit cells |
small, repeating entities of crystalline material |
Example |
Ceramic Crystal Structures
|
mer |
unit cell of a polymer |
|
Polymer Structures
|
Polymorphism |
when metal or nonmetal may have more than one crystal structure |
see: allotropy |
Ceramic Crystal Structures
|
Allotropy |
polymorphism for elemental solids specifically |
see: Polymorphism |
Ceramic Crystal Structures
|
Random copolymers |
No pattern |
AABABBABBBABAA |
Polymer Structures
|
Alternating copolymers |
Directly alternating units |
ABABABABA |
Polymer Structures
|
Block copolymers |
One block identical, block other |
AAAABBBBAAAA |
Polymer Structures
|
Graft copolymers |
Main homopolymer chain with grafted homopolymer side branches |
|
Polymer Structures
|
Homopolymer |
|
|
Polymer Structures
|
Linear Polymer |
repeat units joined end-to-end in one chain |
|
Polymer Structures
|
Branched Polymer |
Has side-branch chains connected to main chains |
|
Polymer Structures
|
Crosslinked Polymer |
Adjacent linear chains connected at various positions by covalent bonds |
|
Polymer Structures
|
Network Polymer |
3D network of multifunctional monomers |
|
Polymer Structures
|
Isotactic Polymer |
All substituents on same side of monomolecular backbone |
|
Polymer Structures
|
Syndiotactic Polymer |
alternating positions along chain (down/up) |
|
Polymer Structures
|
Atactic Polymer |
substituents placed randomly on chain |
|
Polymer Structures
|
Tacity |
|
|
Polymer Structures
|
Interdiff
|