El desgaste y la erosión: desgaste químico

The video explains chemical wear, focusing on how air, water, and other substances react with rocks and metals. Water is highlighted as a common agent, dissolving minerals and forming acids that accelerate rock decomposition. Oxidation, another form of wear, is described through rust formation on metals. Biological factors like lichen and plant roots also contribute to chemical wear by releasing acids. The video emphasizes the combined effects of chemical and mechanical wear on soil materials.

What is one of the most common agents of chemical wear?

• Wind

• Air

• Water

• Sunlight

How does acid rain affect rocks?

• It accelerates their weathering

• It strengthens them

• It makes them glow

• It polishes them

What is the process called when oxygen combines with a chemical to form a new substance?

• Hydration

• Condensation

• Oxidation

• Sublimation

What color is typically associated with rust due to oxidation?

• Purple

• Orange

• Green

• Blue

Which organisms release weak acids that wear away rocks?

• Bacteria

• Lichen

• Moss

• Fungi