Chemistry 131

Diamagnetic
All electrons are paired, Weakly repelled by a magnet
Paramagnetic
one or more unpaired electrons attracted to magnetic
permanet magnet
ferromagnets
a magnet that retains its magnetic properties in the absence of an inducing field or current
Bond Order
related to bond multiplicity
(ex BO= 2 = double bond)
BO forumla
#bonding electrons – #anti bonding electrons
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2
Thermodynamics
The science of heat and work, and their transformations into one another
Thermochemistry
the absorption or release of heat that accompanies chemical reactions
Energy (E)
the capacity to supply or do work
work (W)
occurs when an object mores against a resisting force
kinetic energy (KE)
energy of motion
Kinetic energy
2
1/2MV
Thermal energy (TE)
measured by finding temp of an object
Potential energy (PE)
stored energy, due to position or composition
Chemical energy (CE)
energy stored in bonds of a molecule
heat
the amount of thermal energy transferred from one object to another (due to a temp difference between 2 objects)
Joule (J) formulas
1J= 1kg*m2(squared)
————-
s2(squared)
calorie (lower case c)
1cal=4.184J