Why is it diffifult to make a list of simple rules that will let you classify a chemical and phyiscal change?

Answer 1

It is not that difficult if you know the difference between a chemical and physical change. A physical change is reversible and a chemical change is not. In a physical change a new substance is not formed. The breaking of glass is not reversible and is physical.

Answer 2

It is difficult to make a list of simple rules because chemical and physical changes involve complex interactions at the atomic and molecular levels. These changes can be influenced by various factors such as temperature, pressure, and the specific substances involved, making it challenging to create a comprehensive set of rules that cover all possible scenarios accurately. Additionally, some changes may exhibit characteristics of both physical and chemical changes, further complicating the classification process.