A word processor is a flexible and powerful tool when you need to create great looking A. Documents B. Skills C. Power Point D. None​

Particle exchange energy though elastic collision , hope 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.