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?

Question

a
Isabela
b
Both girls are correct
c
Neither girl is correct
d
Mirabel

Answer 1

d. Mirabel. Eating involves both physical and chemical changes. While chewing the food is a physical change, the digestion process in the body involves chemical changes as enzymes break down the food molecules into energy.