Chemical Energy

Chemical energy is a form of potential energy that is stored in the bonds of chemical compounds. It is released or absorbed during chemical reactions. This energy is associated with the arrangement of atoms within a molecule and the strength of the bonds holding the atoms together.

Key Concepts

• Energy Storage: Chemical energy is stored in the bonds of atoms and molecules.
• Energy Release: When chemical reactions occur, the bonds are broken and new ones are formed, releasing or absorbing energy.
• Types of Reactions: Chemical energy is involved in various types of reactions, including combustion, photosynthesis, and respiration.
• Forms of Chemical Energy: Chemical energy can be stored in fuels, food, batteries, and other substances.

Study Guide

1. What is chemical energy?

Chemical energy is a form of potential energy that is stored in the bonds of chemical compounds.

2. How is chemical energy released or absorbed?

Chemical energy is released or absorbed during chemical reactions when the bonds of atoms and molecules are broken or formed.

3. Give an example of a chemical reaction involving the release of chemical energy.

One example is the combustion of fuel, such as when wood or gasoline burns, releasing heat and light energy.

4. Where is chemical energy stored in living organisms?

Chemical energy is stored in the bonds of molecules like glucose and is released during cellular respiration to power cellular activities.