Question

Which is the best example and explanation that a physical change has occurred?

fireworks exploding, because energy is released as light and heat
gasoline burning, because it forms water vapor and carbon dioxide
O crushing an ice cube, because the chemical structure of the ice cube is changed
dicing potatoes, because the molecules are separated but remain the same substance

Answer 1

For the people wondering, yes, dicing potatoes is the correct answer. Because a new substance has not formed.

Answer 2

dicing potatoes, because the molecules are separated but remain the same substance