When determining if a change to matter is physical or chemical, you would observe key indicators to use as clues. What is the most correct explanation that a physical change has occurred?
a. fireworks exploding, because energy is released as light and heat
b. gasoline burning, because it forms water vapor and carbon dioxide
c. crushing an ice cube, because the chemical structure of the ice cube is changed
d. dicing potatoes, because the molecules are separated but remain the same substa
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