So can someone tell me what 7 plus 7 seven is i will give brainlies i put it in chemestry because its hard

dont delete the question like this other person did

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.