1
Q
exothermic
A
a reaction that gives off heat
gives off energy
negative ∆H
2
Q
endothermic
A
a reaction that cools
a reaction that takes in energy
positive ∆H
3
Q
calculate heat energy change
calculate molar enthalpy change from heat energy change
A
Q=mc∆T
∆H=Q/number of moles
