It depends on where in the digestive cycle what breaks them down. Bile makes very large fat globs into very small ones. This allow enzymes called lipases to finish breaking them down so that they can be absorbed.
In the human body, the process of breaking down carbohydrates is metabolizing
Lipase.
Simple molecules are further broken down in cells in a process called catabolism.
ATP
Boredom.
digestion
This chemical process is called cracking.
Sedimentary, but technically all rocks can be broken down into Soil by a process called 'Weathering'
absorption.
Fermination
Cellular respiration.
The process of breaking down food is called digestion.
digestion
digestion