Thermo Chemistry Flashcards
Heat
Is a form of energy often called thermal energy (j)
Temperature
Is the average kinetic energy of the particles of a substance (c)
Bond energy
The amount of energy required to break a bond in one mole of the molecules in which the bond is formed (kJ.mol-1)
Heat of reactions
The net change of chemical potential energy of a system during a chemical reactions (KJ.mol-1)
H= Eproducts-Ereactants
H=Etakenin-Egivenout
Activated complex
A temporary transition state between reactants and the products
Activation energy
The minimum energy required to start a chemical reaction
Exothermic reaction
A chem reaction that transfers chem potential energy into thermal energy
More energy released
Final is lower
Endothermic reaction
A chemical reaction that transfers thermal energy into chemical potential energy
Catalyst
A substance that increases the rate of the reaction but remains unchanged at the end of the reaction
Only lowers activation energy
