There is a change in how the objects are used. There is a change in the appearance of the objects. There is a change in the materials from which the objects are made. There is a change in both the appearance of the objects and the materials from which they are made.
I gave my students this multiple choice question: Sharpening a pencil and tearing paper are examples of physical changes. Which statement describes why these are physical changes?

Only one answer is correct among these 4 choices:
- There is a change in how the objects are used.
- There is a change in the appearance of the objects.
- There is a change in the materials from which the objects are made.
- There is a change in both the appearance of the objects and the materials from which they are made.

Could you tell me which one is correct?

There is a change in the appearance of the objects.