Modeling clay being molded into a shape is a physical change, not a chemical reaction. In a physical change, the substance retains its chemical composition. When you mold clay, you are altering its shape, but the clay itself remains the same substance. There are no new substances formed in the process, and the change can easily be reversed, such as by reshaping the clay again.
modeling clay is molded into a shape a chemical reaction or physical reaction
1 answer