3. Which of the following is a physical property? A. A pipe cracks when the water inside freezes
B. Paper turns to ashes when ignited
C. Iron turns into rust when in contact with water over time
D. Baking a bread

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.