* No new substances are formed: The aluminum foil and the apple remain the same chemically. The foil doesn't react with the apple to create a new compound.
* Only the arrangement changes: The only change is the physical arrangement of the apple and the foil. The apple is now covered, but its chemical composition hasn't changed.
* Reversible: You can easily remove the foil, returning the apple to its original state.
In contrast, a chemical change would involve:
* New substances being formed.
* A change in chemical composition.
* Difficult or impossible reversal.
Let me know if you have any other questions!
