A physical change involves a change in physical properties.
Physical properties are properties which can be observed without changing the type of matter.
A few of these are texture, shape, size, color, odor, volume, mass, weight, density. When making a baseball bat,wood is carefully crafted into a shape which will best allow a batter to best apply force on the ball. Even though the wood has changed shape and therefore physical properties, the chemical nature of the wood has not been altered. The bat and the original piece of wood are still the same chemical substance. Make sure you do the Microseparation activity .