Help me I don’t understand this

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.

It shows that the experiment is designed properly.

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid

about what?
have a good day