Chemistry-Structure and bonding exo and endothermic

Exothermic reaction -remember like positivityyyy lets off warmth and extra friends are made without much energy! everyone loves axolotyls! ♥

negative▲H, bonds formed, heat released, not much activation energy is needed, graph drawn from top of hill (y axis) to bottom (x axis)

Endothermic reaction- remember like this is not the end but im breaking up with you and energy is required to do that (giving you the cold shoulder) im positive it will be okay in the end because shes coming back from her ex at the bottom!

Energy is required, bonds are broken, the ▲H is positive, feel cold, graph drawn from bottom of hill (x axis) to top of hill (y axis) because shes coming back from her x at the bottom!

Activation energy measured from?

top of nop to the bottom line where reactants comes out from the y axis (whole thing)

▲H measured from?

bottom of the nup to the same place at the y axis. (doesnt include the measure for activation energy)