words of the day:
Exothermic= releasing heat (a+b -> c+d+ heat)

Endothermic= absorbing heat (a+b+heat -> c+d)

Enthalpy= stored chemical energy

-A way to remember which is exo/endothermic just think of the heat exiting from the exothermic reaction, and the other one is just opposite...

-Enthalpy has 'h' as its symbol

-Change in enthalpy has 'triangle h' as its symbol