Question

which answer below correctly identifies the type of change and the explanation for the change in calcium carbonate? physical change because even though a state change was observed, the calcium carbonate retained its original properties physical change because even though a particle size change was observed, the calcium carbonate retained its original properties and was not transformed into a new substance chemical change because a state change was observed, which indicated that the calcium carbonate was transformed into a different substance chemical change because a particle size change was observed, which indicated that the calcium carbonate was transformed into a different substance done

Explanation:

A physical change is one where the substance retains its original chemical properties and is not transformed into a new substance. A change in state (solid - liquid - gas) or particle size alone are physical changes. In the case of calcium carbonate, if only a state or particle - size change is observed without formation of a new substance, it is a physical change.

Answer:

physical change because even though a particle size change was observed, the calcium carbonate retained its original properties and was not transformed into a new substance