1. Heat is the most common form of energy absorbed or released during a chemical reaction. When a chemical reaction is exothermic, it releases heat to the surroundings. When a chemical reaction is endothermic, it absorbs heat from the surroundings.

2. Light is another common form of energy absorbed or released during a chemical reaction. When a chemical reaction is accompanied by the emission of light, it is called a chemiluminescent reaction. When a chemical reaction is accompanied by the absorption of light, it is called a photochemical reaction.

3. Electrical energy can also be absorbed or released during a chemical reaction. When a chemical reaction is accompanied by the flow of electrons, it is called an electrochemical reaction.

4. Mechanical energy can also be absorbed or released during a chemical reaction. When a chemical reaction is accompanied by a change in the volume of the system, it is called a mechanochemical reaction.