Science Chapter 9 # 2:Chemical Weathering

What is chemical weathering?

• Chemical weathering is the formation of sedimentary rocks.
• Chemical weathering is the result of volcanic activity.
• Chemical weathering is the process of physical erosion caused by wind.
• Chemical weathering is a process that causes erosion or disintegration of these particles by means of chemical reactions.

Which type of chemical weathering occurs when rainwater seeps into the ground and reacts with feldspar, changing it to clay?

• Oxidation
• Hydrolysis
• Erosion
• Condensation

_____ are a combination of fungi and algae that grows on rocks and produces acids that break down the minerals within the rocks.

• Mosses
• Ferns
• Seaweed
• Lichens

How can air pollutants such as sulfur dioxide, carbon dioxide, and nitrogen oxide lead to chemical weathering?

• They get released into the air and combine with moisture, falling on rocks as acid rain.

• Air pollutants absorb excess moisture from rocks, reducing chemical weathering.
• Air pollutants create a protective layer on rocks, inhibiting chemical weathering.
• Air pollutants directly strengthen rocks, preventing chemical weathering.

The most common example of oxidation is what?

• freezing of water
• corrosion of copper
• burning of wood
• rusting of iron