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The unit of matter held together by covalent bonds. The electrons from 1 atom are attracted to the protons of another atom.
Graphic representation of a molecule showing atoms, bonds and their relative arrangement.
Bond Dissociation Energy
The energy needed to completely break a covalent bond in a molecule in the gaseou state.
Ionic Compound Properties
High melting point in solids, dissolve in water to form ions, solutions of ions are good conductors of electricity
Covalent Compound Properties
Low melting points, contains solids liquids and gases, strong internal covalent bonds but weak intermolecular bonds.
How hard an atom "pulls" on the electrons. Has to do with the atoms affinity for electrons.
If the electrons are pulled to one side more than the other, one side of a bond has more negative (d-) while the other has more positive (d+)
Naming Molecular Compounds
1. Cation like comes first, then anion like.
2. Cation like keeps elemental name
3. Anion like gets "ide" ending
4. Prefixes are used to specify number of each atom (anion)
Lewis Dot Structures
Drawing of molecules where electrons are shown as dots around elemental symbols
A convenient way of assigning charges to individual atoms in a molecule. =column - things
Valence Shell Electron Pair Repultion Theory
VSEPR. All pairs of electrons get the maximum amount of space available.
Four charge system with three atoms around central atom and one lone pair of electrons
Six charge system with five atoms around central atom and one lone pair of electrons
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