Question

Example #4 A round red ball. This is an example of a Justify your answer for example #4. Tell how you know it is a physical or chemical property or change. Use complete sentences and put it in your own words.

Answer 1

State change refers to physical while change in composition refers to chemical change.

Step-by-step explanation:

If the change is reversible so this is called a physical change such as change state of water from solid into liquid. In this change only physical state changes, the chemical composition remain the same whereas if the change is irreversible so we can called it a chemical change such as burning of wood etc. In chemical change, a new substance is formed by the combination of two or more molecules. So if only state is changed then it is physical change or if the chemical composition changes, it will be a chemical change.