What is an Energy Level Diagrams in IGCSE Chemistry ?

 

• Energy level diagrams are a graphs that represent the energy changes in a chemical reaction.
• The energy of the reactants and products are displayed on the y-axis Vs time  is shown on the x-axis (Reaction pathway or how the reaction proceeds)

• The difference in height between the energy of reactants and products represents the overall energy change of a reaction or what is known as the change in heat content (enthalpy change) given the symbol ΔH
•  read as delta H

• The initial increase in energy represents the activation energy (Ea), which is the minimum energy that colliding particles must have in order to react