Energy Diagrams Flashcards
what is the label for the left axis
potential energy or Ek in KJ
what is the label for the bottom axis
reaction pathway or reaction coordinate
what way does the graph go in an exothermic reaction
reactants are higher then products
which way does the graph go in an endothermic reacton
reactants are lower then products
what does the vertical line between the reactants and the reaction pathway axis represent
potential energy quantity in all of the reactants bonds
what does the vertical line between the products and the reaction pathway axis represent
potential energy of all the products bonds
what does the delta H line on a graph represent
the di8fference between the potential energy of the products and that of the reactants
what does a change in kinetic energy cause
a change in temperature
when potential energy quantities decrease what happens to kinetic energy quantities
they increase (inverse relationship)
is the temperature higher or lower when kinetic energy quantities are high
higher
if the change in potential energy is endothermic, what is the change in kinetic energy
exothermic (the opposite)
if the change in potential energy is exothermic, what is the change in kinetic energy
endothermic (the opposite)
on a phase change graph what does the y axis represent
temperature
on a phase change graph what does the x axis represent
reaction coordinate
what type of energy is involved in a state change
potential energy
