Physical Change

Breaking, shredding, boiling, and mixing are some examples of physical change. Physical changes do not change the identity or the chemical makeup of matter. Physical changes do not change the chemical formula of a substance.

Breaking, shredding, boiling, mixing are some examples of physical change. Physical changes do not change the identity or the chemical makeup of matter. 

Physical changes do not change the chemical formula of a substance. Consider water. An ice cube can melt and form a liquid. Liquid water can evaporate or it can be boiled off. No matter what state the water is in, it is still water. Its formula is always H2O.