Question

Which of the following is not an example of a physical change?
Answer

condensation of water vapor

stretching of a rubber band until it breaks

freezing of a sugar solution to form a popsicle

precipitation of a solid from the combination of two liquids

Answer 1

I guess it's stretching of a rubber band until it breaks. The physical structure of the rubber band doesn't change, after it breaks it returns to it's original state. The only difference is that it now has a cut in it.

Answer 2

precipitation because there was a recombination of chemicals