Energy diagram worksheet illustrating potential energy changes during a chemical reaction, with labeled values for reactants, products, activated complex, and ΔH.

Energy diagram worksheet showing a reaction coordinate graph with potential energy in kJ/mol on the y-axis and reaction coordinate (time) on the x-axis. The graph displays reactants at 40 kJ/mol, products at 10 kJ/mol, and an activated complex at 55 kJ/mol. The ΔH of the reaction is -30 kJ/mol.