How does aluminum react with other substances?

Aluminum is a highly reactive metal that readily reacts with oxygen to form a protective layer of aluminum oxide on its surface. It can also react with acids, such as hydrochloric or sulfuric acid, to produce hydrogen gas and aluminum salts. In the presence of a strong base, aluminum can react to form aluminates and hydrogen gas. Additionally, aluminum can reduce certain metal oxides, such as iron oxide, in a thermite reaction. However, due to its reactivity, aluminum is often used in alloys with other metals to improve its strength and corrosion resistance.