two friends are discussing physical and chemical changes. Isabela says that when you eat it is physical change but when your chew the food is only changed into smaller pieces
Sophia responds by explaining that both eating and chewing food involve physical changes, as the food is simply being broken down into smaller pieces without any chemical reactions taking place. However, once the food reaches the stomach and begins to be digested, it undergoes a chemical change as enzymes break down the molecules into nutrients that the body can absorb. So, while chewing may only entail a physical change, the overall process of digestion involves both physical and chemical changes.
