500
What is B, does not change. When you observe a physical characteristic, you are not changing the object (when you change the object, you are experimenting with chemical changes). With physical characteristics, the composition, structure, function do not change, even if you manipulate the object.
When you observe a physical property, the substance __________.
A) changes
B) does not change
C) burns
D) melts
Explain your answer in terms of composition, structure, and function