Las reacciones de oxidación

The video tutorial discusses the oxidation of metals, focusing on aluminum and iron. Aluminum oxidation is an exothermic reaction that forms a protective layer of aluminum oxide, preventing further reactions. Iron oxidation, or rusting, occurs when iron is exposed to water and oxygen, leading to structural damage. While oxidation can be destructive, it also has beneficial applications, such as in aluminum foil, where the oxide layer protects the metal from reacting with food chemicals.

What is formed when aluminum combusts in the presence of air?

• Aluminum chloride

• Aluminum oxide

• Aluminum sulfate

• Aluminum nitrate

What is the result of iron oxidation when exposed to water and oxygen?

• Iron sulfate

• Iron carbonate

• Iron chloride

• Hydrated Iron 3 oxide

Why is rusting considered a costly problem?

• It causes damage to structures like bridges and boats.

• It makes iron more resistant to water.

• It increases the weight of iron structures.

• It enhances the strength of iron.

How does the aluminum oxide layer benefit aluminum?

• It makes aluminum heavier.

• It makes aluminum more reactive.

• It changes the color of aluminum.

• It prevents further oxidation by acting as a protective layer.

What happens when the aluminum oxide layer is removed?

• Aluminum becomes non-reactive.

• Aluminum reacts exothermically with air.

• Aluminum turns into a liquid.

• Aluminum becomes magnetic.