thermochemisty (UNFINISHED) Flashcards
bond energy (1)
amount of energy required to break apart a chemical bond
bond order (1)
number of bonds between two atoms
bond length (1)
average distance between nucleus of two atoms
activation energy (2)
minimum amount of energy that must be used to activate a chemical reaction, the same as the bond energy of the reactants
activation complex (1)
unstable arrangement of atoms that appears for a short period of time at the maximum energy point of a reaction
catalyst (1)
a substance that allows a chemical reaction to accelerate more than it would under normal conditions
enthalpy change (1)
part of chemical reaction where heat is absorbed/released
endothermic reaction (1)
chemical reaction that requires external energy in order to carry through
exothermic reaction (1)
chemical reaction where energy is released
amount of bonds (4)
more bonds require more strengths to break but are short because they are inversely proportionate to less bonds
less bonds are longer but weaker
chemical bonds (1)
need to be broken in order for chemical reaction to take place because its changing the molecules n shit
calculation of bond energy
multiply number of chemical bonds for each molecule in chemical equation by energy for each bond (given)
calculation of change in enthalpy (1)
ΔH = activation energy - energy of products
calculation of activation energy (1)
add all bond energies for the reactants
checking if endo/exothermic (1)
ΔH is neg = exothermic
pos = endothermic
