Final answer:
Chemical digestion refers to the enzymatic breakdown of food into its chemical components and involves enzymatic reactions and bile's role in emulsifying fats, all of which represent chemical changes that occur during digestion.
Step-by-step explanation:
In the context of the digestive processes mentioned, chemical digestion will be a part of the chemical change section in a Venn diagram. Unlike mechanical digestion, which involves the physical breakdown of food without changing its chemical structure, chemical digestion involves enzymatic reactions that break down the food into its chemical components.
For example, enzymes like amylase in the mouth break down carbohydrates, trypsin in the small intestine digests proteins, and lipase assists in lipid digestion. Bile, while not an enzyme, is produced by the liver and stored in the gallbladder to emulsify fats in the small intestine, thereby aiding digestive enzymes in their function.
This process reflects a true chemical change as it alters the original molecules of the food into new forms that can be absorbed and utilized by the body.