Me feel in the blanks giving 30 points 4) properties can only be observed when a substance changes into another substance. 5) properties such as color and shape are easy to observe. 6) in a chemical change a substance forms. 7) cooking or baking food results in a change. 8) a melting ice cube is a change. 9) iron rusting is an example of a change. 10) water boiling on the stove is an example of a change