ANATOMY

Detailed explanation-1: -As food travels from your mouth into your digestive system, it’s broken down by digestive enzymes that turn it into smaller nutrients that your body can easily absorb. This breakdown is known as chemical digestion.

Detailed explanation-2: -Saliva plays an important role in chemical digestion. As the teeth break food into smaller pieces, saliva mixes with the food. Chemicals called enzymes, found in saliva, break down food into smaller pieces. When you swallow, muscles in your throat move the food downward.

Detailed explanation-3: -Four examples of chemical digestion are amylase in the saliva, hydrochloric acid in the stomach, pepsin in the stomach, and lipase in the small intestine.

Detailed explanation-4: -Food is chemically changed in digestion when new, smaller substances are formed. These chemical changes are examples of chemical digestion. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine.

Detailed explanation-5: -The salivary glands present in our mouth help in the breakdown of the food. In this process, there is a formation of a new substance. Therefore, it is considered to be a chemical change.