How are molecules and ionic compounds
the same?

They are the same due to the fact that they either share electrons or transfer electrons. Molecules from when atoms link together, and ionic compounds are formed due to the transfer of electrons.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.