Chemical energy

Definition

Chemical energy is the potential energy stored in the bonds of chemical compounds, which is released or absorbed during chemical reactions. It plays a crucial role in various physical processes and energy transformations.

5 Must Know Facts For Your Next Test

1. Chemical energy is a form of potential energy that can be converted into other forms of energy such as thermal, electrical, or mechanical energy.
2. During exothermic reactions, chemical energy is released in the form of heat, while during endothermic reactions, it is absorbed.
3. The conservation of energy principle states that chemical energy cannot be created or destroyed but can only change forms.
4. Fuels like gasoline and natural gas store significant amounts of chemical energy that can be harnessed for work.
5. Photosynthesis in plants converts solar energy into chemical energy stored in glucose molecules.

Review Questions

• What happens to chemical energy during an exothermic reaction?
• How does the conservation of energy principle apply to chemical reactions?
• Give an example of a process where chemical energy is converted into mechanical energy.

Related terms

Potential Energy:

Energy possessed by an object due to its position relative to others or internal stresses within itself.

Exothermic Reaction: A chemical reaction that releases heat, resulting in an increase in temperature of the surrounding environment.

Endothermic Reaction: A chemical reaction that absorbs heat from its surroundings, leading to a decrease in temperature.