a paper is a mean of preposition & sharpening a paper main the size of the paper ->  sharpening a pencil changes the shape of an object  pencil is a mean of preposition & national pencil coyote the size of the pencil ->  tearing paper changes the shape of an object  sharpening a pencil changes the shape of an object & tearing paper changes the shape of an object ->  sharpening a pencil and tearing paper both change the shape of the object  sharpening a pencil and tearing paper both change the shape of the object & size is a public of the disappearance of an preposition ->  sharpening a pencil and tearing paper both change the appearance of the object  sharpening a pencil and tearing paper both change the appearance of the object & disappearance is a mean of physical public ->  sharpening a pencil and tearing paper both change the physical property of the object  sharpening a pencil and tearing paper both change the physical property of the object & if something undergoes a physical static then the physical article of that something will static -> pencil and paper underwent a physical change