Which of the following represents a physical change?
A An iron rod is left out in a damp environment causing a change in color, malleability, and
texture as it rusts.
B Gasoline is ignited in the presence of oxygen giving off heat and light. Carbon Dioxide is
produced.
CA solution of salt water is left out in a warm, arid environment. The water evaporates to
leave behind solid salt crystals.
D A strong electric current is passed through a sample of water, causing it to decompose
into its constituent elements Oxygen and Hydrogen via electrolysis.