Explain chemical energy.

The main and most important form that energy takes in the chemical world is the stability that atoms achieve when they bind together. This property of matter is what makes chemistry possible - atoms are more stable when they connect to each other in certain ways than they are floating as individuals in space. All that this means is that if you have two atoms which share a bond, they will remain bonded unless acted on by an outside force. A helpful analogy is a rubber band: It will always snap back to its original form, unless you pull so hard that you break it.

For example, you can break a chemical bond mechanically: If you have a hydrogen molecule (two protons sharing two electrons), another particle can physically hit the original molecule with sufficient force to pry the original molecule apart.

Another example of a way to break a chemical bond is to introduce light of the correct energy to force the electrons to push the atoms apart, or induce vibrations between the atoms to rip apart the structure.

If you want to turn something stable (unreactive) into something unstable (reactive), you must force that to happen by introducing disruptions to the stable system in the form of heat (accelerating the movement of the particles, kind of like the first example) or light (the second example).