Decomposition reactions are reactions that break apart a single reactant into the elements or simple compounds. In such case, energy inputs or a catalysts is required.
Here is an example of more complicated compounds being broken down into similar parts.
This is where a compound breaks into similar parts.
This is just another example of a decomposition reaction
This is an example of a molecule being combined with an enzyme.
An example of a decomposition reaction would be AZ = A + Z.
For more information check out my sources: http://education-portal.com/academy/lesson/decomposition-reaction-definition-examples-quiz.html http://education-portal.com/academy/lesson/decomposition-reaction-definition-examples-quiz.html http://socratic.org/questions/what-is-the-difference-between-a-decomposition-reaction-and-a-replacement-reacti http://slideplayer.us/slide/223113/ (go to slide 8) http://scienceprojectideasforkids.com/2010/enzymes/