Bond energies Flashcards
What happens during a chemical reaction in terms of bonds
Old bonds are broken and new bonds are formed
Why must energy be supplied to a chemical reaction
To break existing bonds
Is bond breaking exo or endothermic
Endothermic
What happens when new bonds are formed
Energy is released
Is forming bonds exo or endothermic
Exothermic
In … reaction the energy released by forming bonds is greater than the energy used to break them
Exothermic
In Exothermic reaction the energy … by forming … is … than the … used to … them
In Exothermic reaction the energy released by forming bonds is greater than the energy used to break them
In … reactions the energy used to break bonds is greater than the energy released by forming them
Exothermic
In endothermic reaction the energy … by forming … is … than the … used to … them
In endothermic reaction the energy released by forming bonds is greater than the energy used to break them
In bond energy calculations how do u find the overall energy change
(Energy required to break bonds) - (energy released by forming bonds)
