* Potential Energy: This refers to the energy stored within the chemical bonds of molecules.
* Reactants: The starting materials of a chemical reaction.
* Products: The substances formed by a chemical reaction.
Types of Enthalpy Change:
* Exothermic Reaction (ΔH < 0): The products have lower potential energy than the reactants. This means energy is released during the reaction, often as heat.
* Endothermic Reaction (ΔH > 0): The products have higher potential energy than the reactants. This means energy is absorbed from the surroundings during the reaction.
In summary:
The difference in potential energy between reactants and products tells us whether a reaction releases or absorbs energy, and how much energy is involved. This information is crucial for understanding and predicting the feasibility and spontaneity of chemical reactions.
