Two friends are discussing physical and chemical changes. Isabela says that when you eat, it is a physical change because when you chew, the food is only changed into smaller pieces. Mirabel says that when you eat, it is a chemical change because your body digests the food as the chemicals in your body break down the food into energy.

Who is right? (1 point)
Mirabel
Isabela
• Neither girl is correct
• Both girls are correct

1 answer

Mirabel is correct. When you eat, the process involves both physical and chemical changes. Chewing the food into smaller pieces is a physical change, but the digestion process that breaks down the food into energy involves chemical changes. However, if we consider the primary definition being discussed in the context of digestion, the emphasis is on the chemical changes as the body's processes break down the food at a molecular level. Therefore, while both girls mention aspects of the process, Mirabel's assertion about the chemical change during digestion is more accurate in the context provided.