* Physical Change: A change in the form or appearance of a substance, but not its chemical composition.

* Chemical Change: A change that results in the formation of new substances with different chemical properties.

When you tear paper, you are simply changing its shape and size. The paper itself remains composed of the same cellulose fibers. There is no new substance formed, and the chemical composition of the paper remains unchanged.

Here are some examples to illustrate the difference:

* Physical change: Tearing paper, melting ice, boiling water

* Chemical change: Burning wood, rusting iron, cooking an egg

Let me know if you'd like more examples!