A physical change. Changes between Solid, Liquid, and Gas.
An example of physical change could be breaking or tearing.
Yes, when a chemical is added or taken away, the overall substance changes identity. For example, adding oxygen (as fire) to carbon (as coal) one would produce carbon dioxide.
This would be a physicall change.
physical changes
Heroin Addiction Changes Priorities - Monica's Story
Using Pictures of Internal Damage Change Smokers' Habits
How to Discover Signs of Drug Use in People Around You
Whitney Houston's Sister-In-Law Blames Love Life For Her Death