Question

Describe an example of chemical weathering.

   Describe an example of chemical weathering.

Oxford Insight Science 8

Oxford Insight Science 8

Jenny Zhang, Diane… 1st Edition

Chapter 5, Problem 11

Instant Answer

Solved by Expert Devin Lea

06/22/2021

Step 1

Chemical weathering refers to the process by which rocks and minerals undergo changes in their composition due to chemical reactions. This often involves the interaction of water, air, and other substances with the minerals in the rock. Show more…

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Key Concepts

Chemical Weathering

Chemical weathering involves the breakdown or alteration of minerals in rocks through chemical reactions, typically with water, acids, or other reactive agents. This process changes the mineral composition of rocks, often leading to the formation of new minerals and soluble compounds that can be washed away. It fundamentally alters the structure and composition of rocks over time.

Acid Rain

Acid rain is a significant agent in chemical weathering. It forms when sulfur dioxide and nitrogen oxides react with atmospheric moisture to produce acids, which then fall as precipitation. When this acidic water contacts rocks, it can chemically react with minerals—especially carbonate rocks like limestone—leading to processes such as dissolution and the overall weakening of the rock structure.

Dissolution

Dissolution is a chemical weathering process where minerals in rocks are dissolved by water, often enhanced by acidity. This reaction results in the removal of material from the rock, effectively reducing its structure and leading to the gradual transformation or disappearance of the original mineral form. Dissolution is crucial for understanding how soluble minerals are mobilized and re-distributed in the environment.

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