Physical and Chemical Changes
Any charactsitic of a material that can be observe or measure without changing the identity of the material.
A change in the identity of a substance due to the chemical properties of that substance.(you have a new substance) (is it reverably ?)
The Physical Property of a substance change, but the identity of the substance does not change.
Any charactistic that gives a substance the abillity to under go a change that results in a new substance.