Two Forms of Chemical Weathering

What do Chemical Reactions do to Rocks?

• Change the Physical and Chemical Composition.

What Liquid is needed for Chemical Weathering to Occur?

• Water

What Variable effects the Rate at Which Chemical Weathering Occurs?

• Temperature

What does Chemical Weathering eventually do to the Rock?

• Causes the Rock to Rot or Decompose over time.

What is Carbonation?

• When Acidic Water reacts with Rocks made from Calcium Carbonate.

What Landscape is formed due to Chemical Weathering?

Karst Landscape.

Whats an Example of a Karst Landscape.

The Burren Co. Clare

What Rock is made from Calcium Carbonate?

• Limestone

What Features of Limestone make Carbonation very effective.

• Bedding Planes

• and Cracks.

What Happens when Rainwater falls through the Atmosphere?

• Mixes with CO2

• Forms Weak Carbonic Acid

What Happens when this Weak Carbonic Acid hits Limestone?

• Forms Calcium Bicarbonate

• Which Dissolves Limestone

What’s an Example of Carbonation landforms in Ireland?

• Burren. Co Clare

What is Hydrolysis?

• Most Common Type of Chemical Weathering.

Where does Hydrolysis Occur?

• In Granite Rock that Contains Minerals Quartz, Mica, Feldspar.

In which Regions is Hydrolysis most effective?

• Warm and Wet Regions.

What Region is Hydrolysis seen in ?

• Brazil

What is Hydrolysis important in forming?

• Clay Soils