Chemical Weathering

Weathering, Erosion, & Deposition

Focus on Chemical Weathering

Open Ended

How is this different from tearing up a piece of paper?

Word Cloud

What would happen to this bike if I left it outside all summer?

Chemical weathering breaks rocks but also changes the chemicals of the rocks.

Caused by:

Oxygen
Rainwater
Carbon Dioxide

Oxygen

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• Oxygen in the air links up with the elements in rocks to form oxides.

• The oxides then break away from the rocks.

• This is what happened to the bike.

  • Iron + oxygen → rust

Rusted rocks fall apart

Rainwater

​Changes minerals in two ways

• Dissolves some minerals

• Water links up with other minerals to form new substances

  • These substances then break away from the rocks

Carbon Dioxide

●Carbonic acid formed when CO2 and water combine
● This acid can dissolve rocks like Limestone and Marble

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​https://www.tourdeforce360.com/carlsbad/

Open Ended

What force created the Carlsbad Caverns?

How long do you think this process took?

Open Ended

What was your favorite feature in Carlsbad Caverns?

Multiple Choice

Weathering is the ___________ of rocks

• movement

• depositing

• break down

• dropping off

Multiple Choice

Which of the following does NOT cause chemical weathering?

• Oxygen

• Nitrogen

• Rain Water

• Carbon Dioxide