* Chemical Change: Corrosion involves a chemical reaction between the aluminum metal and its surrounding environment, primarily oxygen and water.
* Formation of New Substances: During corrosion, aluminum reacts with oxygen to form aluminum oxide (Al₂O₃). This oxide layer is a protective barrier that prevents further corrosion.
* Change in Properties: The aluminum metal undergoes a change in its chemical composition and properties. It loses its shiny metallic appearance and becomes dull or whitish.
Therefore, the process of aluminum corrosion is a chemical change involving the formation of new substances and a change in the metal's properties.