Chemical change: the wax burning Physical change: the wax melting Physical change: the wax vaporizing
Work Step by Step
In the photo, the wax burning presents a chemical change. Parts of the candle is changed into gases and released as heat energy. In the photo, the wax melting presents a chemical change as the flame melts the was and it changes from a solid to a liquid. The wax remains the same compositions. In this photo, the wax vaporizing presents a physical change as the wax remains the same compositions.