Its a chemical change.
Chemical Reaction
Digesting french fries is both a physical and a chemical change. The chewing, pressing, and manipulating of the french fry is physical. The enzymes, bacterias, and acids breaking them down would be chemical.
Digesting French fries is a chemical change because the process involves breaking down the molecules in the food through enzymes and acids in the stomach to extract the nutrients for absorption into the body. This results in a change in the chemical composition of the food.
It's both actually
Digesting food is a very good example of a chemical change. However, it is also a common example of a physical change with the body.
Completely digesting a sandwich is not considered a physical change; it is a chemical change. During digestion, the food undergoes various chemical reactions, breaking down complex molecules into simpler ones, such as proteins into amino acids and carbohydrates into sugars. This process alters the chemical composition of the food, distinguishing it from physical changes, which do not affect the chemical structure.
It's actually both, my science teacher and the class are talking about that.
A chemical change is any kind of reaction that changes the chemical make up of a compound. Chemical changes are mostly irreversable. Such as: Burning wood Baking a cake (batter to cake stuffs) Digesting food (food to feces) etc.
Digesting a sandwich would not be considered a physical change because it involves a chemical process where the food is broken down into smaller molecules by enzymes in the digestive system. This process leads to the absorption of nutrients into the bloodstream rather than just a change in physical appearance or state.
A physical change would mean it only changed forms, so if you were eating a peanut and you chewed on it, and it became a paste, then that's a physical change. On the other hand if you were to have the peanut in your stomach and it was turned into energy that would be a chemical change since it no longer is a peanut, but fuel.
The digestion of food through the alimentary canal involve a series of chemical and physical changes. In the example of pizza its bread component undergoes chemical changes as it is digested by amylase enzymes in saliva. Other chemical changes include hydrochloric acid of the stomach "attacking" and digesting proteins found in the pizza.