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17 terms

Thermochemistry

Mr. Theisen's honors chem class.
STUDY
PLAY
thermochemistry
the study of energy transfers and chemical reactions
energy
the ability to do work
system
what we are observing
surroundings
everything outside of the system
inter-convertible
All forms of energy are...
kinetic
energy due to motion
potential
energy depends on position or composition
exothermic
Reactions that release energy are... Energy flows from the system to the surroundings.
endothermic
Reactions that absorb energy... Energy flows from the surroundings into the system.
thermal equilibrium
Two objects at the same T are at...
-q
Exothermic, heat leaves the system.
+q
Endothermic, heat is gained by the system.
Heat capacity
The amount of heat that most move into an entire object to raise its temperature by 1°C.
q=C∆T
Formula for the energy using heat capacity.
specific heat
the amount of heat that must move into 1.0g of a substance to raise its temperature 1°C.
q=ms∆T
Formula for energy using specific heat.
qrxn=qH2O+qcal
Calorimetry equation.