Which of the following properties of atoms decrease as you move down a column on the periodic table Ionic radii
Ionization energy

A3.5 gap gps and your masters degree

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.