Final answer:
Breaking a cookie is a physical change because only the shape and texture change, while the composition remains the same.
Step-by-step explanation:
Yes, breaking a cookie is a physical change. A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. When you break a cookie, the composition of the cookie remains the same, but its shape and texture change. This is similar to how melting ice or tearing paper are physical changes.